- PCV valve and hose
- PCV hose connections
- Fuel injector assembly blockage
- Gas leak from exhaust system
- Intake system
- Fuel pressure
- Mass air flow meter sub-assembly
- Engine coolant temperature sensor
- EGR valve assembly
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000026EFO |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [09/2022 - ] |
| Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P017100,P017200; System Too Lean Bank 1; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] | ||
|
DTC |
P017100 |
System Too Lean Bank 1 |
|
DTC |
P017200 |
System Too Rich Bank 1 |
DESCRIPTION
The fuel trim is related to the feedback compensation value, not to the basic injection duration. The fuel trim consists of both the short-term and long-term fuel trims.
The short-term fuel trim is fuel compensation that is used to constantly maintain the air fuel ratio at the stoichiometric air fuel ratio. The signal from the air fuel ratio sensor indicates whether the air fuel ratio is rich or lean compared to the stoichiometric ratio. This triggers a reduction in the fuel injection volume if the air fuel ratio is rich and an increase in the fuel injection volume if lean.
Factors such as individual engine differences, wear over time and changes in operating environment cause short-term fuel trim to vary from the central value. The long-term fuel trim, which controls overall fuel compensation, compensates for long-term deviations in the fuel trim from the central value caused by the short-term fuel trim compensation.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P017100 |
System Too Lean Bank 1 |
With a warm engine and stable air fuel ratio feedback, the fuel trim is considerably in error to the lean side (2 trip detection logic). |
|
Comes on |
DTC stored |
|
|
P017200 |
System Too Rich Bank 1 |
With a warm engine and stable air fuel ratio feedback, the fuel trim is considerably in error to the rich side (2 trip detection logic). |
|
Comes on |
DTC stored |
|
HINT:
- When DTC P017100 is stored, the actual air fuel ratio is on the lean side. When DTC P017200 is stored, the actual air fuel ratio is on the rich side.
- If the vehicle runs out of fuel, the air fuel ratio is lean and DTC P017100 may be stored. The MIL is then illuminated.
- When the total of the short-term and long-term fuel trim values is within the malfunction threshold (and the engine coolant temperature is higher than 75°C [167°F]), the system is functioning normally.
MONITOR DESCRIPTION
Under closed loop fuel control, fuel injection volumes that deviate from those estimated by the ECM cause changes in the long-term fuel trim compensation value. The long-term fuel trim is adjusted when there are persistent deviations in the short-term fuel trim values. Deviations from the fuel injection volumes estimated by the ECM also affect the average fuel trim learned value, which is a combination of the average short-term fuel trim (fuel feedback compensation value) and the average long-term fuel trim (learned value of the air fuel ratio). If the average fuel trim learned value exceeds the malfunction thresholds, the ECM interprets this as a malfunction of the fuel system and stores a DTC.
Example:
The average fuel trim learned value is +35*1 or +48*2% or higher, or -35% or less, the ECM interprets this as a fuel system malfunction.
- *1: except Mexico Models
- *2: for Mexico Models
MONITOR STRATEGY
|
Related DTCs |
P0171: Fuel trim lean P0172: Fuel trim rich |
|
Required Sensors/Components (Main) |
Fuel system |
|
Required Sensors/Components (Related) |
Air fuel ratio sensor Mass air flow meter sub-assembly Crankshaft position sensor |
|
Frequency of Operation |
Continuous |
|
Duration |
Within 10 seconds |
|
MIL Operation |
2 driving cycles |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
|
Monitor runs whenever the following DTCs are not stored |
P0010 (Camshaft timing oil control valve) P0011 (VVT system - advance) P0012 (VVT system - retard) P0016 (VVT system - misalignment) P0031, P0032, P101D (Air fuel ratio sensor heater) P0101, P0102, P0103 (Mass air flow meter) P0107, P0108 (Manifold absolute pressure) P0117, P0118 (Engine coolant temperature sensor) P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor) P0125 (Insufficient coolant temperature for closed loop fuel control) P0335 (Crankshaft position sensor) P0340, P0342, P0343 (Camshaft position sensor) P0351 - P0354 (Igniter) P0400 (EGR system) P0401 (EGR system (closed)) P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance) |
|
Fuel system status |
Closed loop |
|
Auxiliary battery voltage |
11 V or higher |
|
Either of the following conditions is met |
1 or 2 |
|
1. Engine speed |
Less than 1100 rpm |
|
2. Engine load |
10% or higher |
|
Catalyst monitor |
Not executed |
TYPICAL MALFUNCTION THRESHOLDS
P0171 and P0172: Fuel-trim Lean/Rich
|
*1: except Mexico Models
*2: for Mexico Models |
|
|
EVAP purge-cut |
Executing |
|
Either of the following conditions is met |
1 or 2 |
|
1. Average between short-term fuel trim and long-term fuel trim |
35*1 or 48*2% or higher (varies with engine coolant temperature) |
|
2. Average between short-term fuel trim and long-term fuel trim |
-35% or less (varies with engine coolant temperature) |
CONFIRMATION DRIVING PATTERN
HINT:
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
![2023 - 2025 MY Corolla Corolla HV [09/2022 - ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
- Permanent misfire and fuel system DTCs can only be cleared when performing the universal trip driving pattern when no malfunction is detected.
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for at least 30 seconds.
- Turn the power switch on (IG) [A].
- Turn the Techstream on.
-
Put the engine in Inspection Mode (Maintenance Mode).
Click here
- Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with the A/C switch and all accessories off [B].
- With the engine warmed up, idle the engine for 5 minutes or more [C].
-
With the engine running, drive the vehicle at a speed between 60 and 100 km/h (37 and 62 mph) for 5 minutes or more [D].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
If the engine stops, further depress the accelerator pedal to restart the engine.
- Enter the following menus: Powertrain / Engine / Trouble Codes [E].
-
Read the pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
WIRING DIAGRAM
-
Refer to DTC P010012 for the mass air flow meter sub-assembly circuit.
Click here
-
Refer to DTC P219519 for the air fuel ratio sensor circuit.
Click here
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.
Click here
(Select Powertrain in Health Check and then check the time stamp data.)
Click here
-
If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.
Click here
HINT:
- Sensor 1 refers to the sensor closest to the engine assembly.
- Sensor 2 refers to the sensor farthest away from the engine assembly.
- A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
- A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
- Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
|
1. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P017100 OR P017200) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs.
Powertrain > Engine > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC P017100 or P017200 is output |
A |
|
DTC P017100 or P017200 and other DTCs are output |
B |
HINT:
If any DTCs other than P017100 or P017200 are output, troubleshoot those DTCs first.
| B |
|
|
|
2. |
CHECK PCV HOSE CONNECTIONS |
(a) Check the PCV hose connections.
Click here
OK:
PCV valve and hose are connected correctly and are not damaged.
| NG |
|
REPAIR OR REPLACE PCV HOSE |
|
|
3. |
CHECK INTAKE SYSTEM |
(a) Check the intake system for vacuum leaks.
Click here
OK:
No leaks from intake system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the intake system.
Click here
| NG |
|
REPAIR OR REPLACE INTAKE SYSTEM |
|
|
4. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Put the engine in Inspection Mode (Maintenance Mode).
Click here
Powertrain > Hybrid Control > Utility
|
Tester Display |
|---|
|
Inspection Mode |
(e) Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.
(f) Idle the engine for 5 minutes or more with park (P) selected.
(g) Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / Data List / A/F (O2) Sensor Current B1S1 and O2 Sensor Voltage B1S2.
Powertrain > Engine > Active Test
|
Active Test Display |
|---|
|
Control the Injection Volume for A/F Sensor |
|
Data List Display |
|---|
|
A/F (O2) Sensor Current B1S1 |
|
O2 Sensor Voltage B1S2 |
(h) Change the fuel injection volume using the Techstream, and monitor the output voltage of the air fuel ratio sensor (A/F (O2) Sensor Current B1S1) and heated oxygen sensor (O2 Sensor Voltage B1S2) displayed on the Techstream.
HINT:
- The Active Test "Control the Injection Volume for A/F Sensor" can be used to lower the fuel injection volume by 12.5% or increase the injection volume by 12.5%.
- The air fuel ratio sensor is displayed as A/F (O2) Sensor Current B1S1, and the heated oxygen sensor is displayed as O2 Sensor Voltage B1S2 on the Techstream.
- The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.
- If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.
Standard:
|
Techstream Display (Sensor) |
Injection Volume |
Status |
Voltage |
|---|---|---|---|
|
A/F (O2) Sensor Current B1S1 (Air fuel ratio) |
12.5% |
Rich |
Below -0.075 mA |
|
-12.5% |
Lean |
Higher than 0.037 mA |
|
|
O2 Sensor Voltage B1S2 (Heated oxygen) |
12.5% |
Rich |
Higher than 0.55 V |
|
-12.5% |
Lean |
Below 0.4 V |
|
Status A/F (O2) Sensor Current B1S1 |
Status O2 Sensor Voltage B1S2 |
Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition |
Suspected Trouble Area |
Proceed to |
|---|---|---|---|---|
|
Lean/Rich |
Lean/Rich |
Normal |
- |
A |
|
Lean |
Lean |
Actual air fuel ratio lean |
|
|
|
Rich |
Rich |
Actual air fuel ratio rich |
|
|
|
Lean |
Lean/Rich |
Air fuel ratio sensor malfunction |
|
B |
|
Rich |
Lean/Rich |
Air fuel ratio sensor malfunction |
|
- Lean: While performing the Active Test "Control the Injection Volume for A/F Sensor", the air fuel ratio sensor output voltage (A/F (O2) Sensor Current B1S1) is consistently higher than 0.037 mA,, and the heated oxygen sensor output voltage (O2 Sensor Voltage B1S2) is consistently below 0.4 V.
- Rich: While performing the Active Test "Control the Injection Volume for A/F Sensor", the air fuel ratio sensor output voltage (A/F (O2) Sensor Current B1S1) is consistently below -0.075 mA, and the heated oxygen sensor output voltage (O2 Sensor Voltage B1S2) is consistently higher than 0.55 V.
- Lean/Rich: While performing the Active Test "Control the Injection Volume for A/F Sensor", the output voltage of the fuel ratio sensor (A/F (O2) Sensor Current B1S1) or heated oxygen sensor (O2 Sensor Voltage B1S2) alternates correctly.
HINT:
Refer to "Data List / Active Test" [A/F (O2) Sensor Current B1S1 and O2 Sensor Voltage B1S2].
Click here
| B |
|
|
|
5. |
READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.
Powertrain > Engine > Data List
|
Tester Display |
|---|
|
Coolant Temperature |
(e) Read the Data List twice, when the engine is both cold and warmed up.
Standard:
|
Techstream Display |
Condition |
Specified Condition |
|---|---|---|
|
Coolant Temperature |
Cold engine |
Same as ambient air temperature |
|
Warm engine |
Between 75 and 100°C (167 and 212°F) |
HINT:
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
Click here
| NG |
|
REPLACE E.F.I. ENGINE COOLANT TEMPERATURE SENSOR
|
|
|
6. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Put the engine in Inspection Mode (Maintenance Mode).
Click here
Powertrain > Hybrid Control > Utility
|
Tester Display |
|---|
|
Inspection Mode |
(e) Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.
HINT:
The A/C switch and all accessories should be off.
(f) Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Intake Manifold Absolute Pressure and Engine Independent.
Powertrain > Engine > Active Test
|
Active Test Display |
|---|
|
Control the EGR Step Position |
|
Data List Display |
|---|
|
Intake Manifold Absolute Pressure |
|
Engine Independent |
(g) Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.
NOTICE:
- Do not leave the EGR valve open for 10 seconds or more during the Active Test.
- Be sure to return the EGR valve to step 0 when the Active Test is completed.
- Do not open the EGR valve 30 steps or more during the Active Test.
OK:
The value of Intake Manifold Absolute Pressure changes in response to the EGR step position when the value of Engine Independent is "Operate".
Standard:
|
- |
Control the EGR Step Position (Active Test) |
|
|---|---|---|
|
0 Steps |
0 to 30 Steps |
|
|
Intake Manifold Absolute Pressure (Data List) |
(EGR valve is fully closed) |
Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed |
HINT:
- If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).
- While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be malfunctioning.
- Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.
| OK |
|
|
|
7. |
INSPECT EGR VALVE ASSEMBLY |
(a) Remove the EGR valve assembly.
Click here
(b) Check if the EGR valve is stuck open.
OK:
EGR valve is tightly closed.
HINT:
Perform "Inspection After Repair" after replacing the EGR valve assembly.
Click here
| NG |
|
REPLACE EGR VALVE ASSEMBLY
|
|
|
8. |
READ VALUE USING TECHSTREAM (MASS AIR FLOW SENSOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Put the engine in Inspection Mode (Maintenance Mode).
Click here
Powertrain > Hybrid Control > Utility
|
Tester Display |
|---|
|
Inspection Mode |
(e) Start the engine.
(f) Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.
Powertrain > Engine > Data List
|
Tester Display |
|---|
|
Engine Speed |
|
Mass Air Flow Sensor |
|
Coolant Temperature |
(g) Allow the engine to idle until Coolant Temperature is 75°C (167°F) or higher.
(h) Read Mass Air Flow Sensor with the engine speed at 2500 rpm.
HINT:
During charge control, the engine speed is set at idle. Therefore, the engine speed will not increase when the accelerator pedal is depressed. In this case, read the Data List after charge control has completed.
Standard:
|
Techstream Display |
Condition |
Specified Condition |
|---|---|---|
|
Mass Air Flow Sensor |
Engine warmed up Shift position: P A/C: Off Engine Speed: 2500 rpm |
Between 4.5 and 8.5 gm/sec |
| NG |
|
|
|
9. |
CHECK FUEL PRESSURE |
(a) Check the fuel pressure.
Click here
| NG |
|
REPAIR OR REPLACE FUEL SYSTEM |
|
|
10. |
CHECK FOR EXHAUST GAS LEAK |
(a) Check for exhaust gas leaks.
OK:
No gas leaks in exhaust system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the exhaust system.
Click here
| NG |
|
REPAIR OR REPLACE EXHAUST SYSTEM |
|
|
11. |
INSPECT IGNITION SYSTEM |
(a) Inspect the ignition system.
Click here
HINT:
- If the spark plugs or ignition system malfunctions, engine misfire may occur. The misfire count can be read using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Misfire Count Cylinder #1 to Misfire Count Cylinder #4.
-
Perform "Inspection After Repair" after repairing or replacing the ignition system.
Click here
| NG |
|
REPAIR OR REPLACE IGNITION SYSTEM |
|
|
12. |
INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME) |
(a) Check the injection and volume.
HINT:
-
Refer to the fuel injector assembly inspection procedure.
Click here
- If the fuel injector assemblies malfunction, engine misfire may occur. The misfire count can be read using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Misfire Count Cylinder #1 to Misfire Count Cylinder #4.
-
Perform "Inspection After Repair" after replacing the fuel injector assembly.
Click here
| OK |
|
| NG |
|
REPLACE FUEL INJECTOR ASSEMBLY
|
|
13. |
INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) |
(a) Inspect the air fuel ratio sensor.
Click here
HINT:
Perform "Inspection After Repair" after replacing the air fuel ratio sensor.
Click here
| NG |
|
|
|
14. |
CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR) |
|
*a |
Front view of wire harness connector (to Air Fuel Ratio Sensor) |
(a) Disconnect the air fuel ratio sensor connector.
(b) Turn the power switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C55-2 (+B) - Body ground |
Power switch on (IG) |
11 to 14 V |
| NG |
|
|
|
15. |
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) |
(a) Disconnect the air fuel ratio sensor connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C55-1 (HA1A) - C147-28 (HA1A) |
Always |
Below 1 Ω |
|
C55-3 (A1A+) - C147-132 (A1A+) |
Always |
Below 1 Ω |
|
C55-4 (A1A-) - C147-131 (A1A-) |
Always |
Below 1 Ω |
|
C55-1 (HA1A) or C147-28 (HA1A) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
C55-3 (A1A+) or C147-132 (A1A+) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
C55-4 (A1A-) or C147-131 (A1A-) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
16. |
REPLACE AIR FUEL RATIO SENSOR |
(a) Replace the air fuel ratio sensor.
Click here
HINT:
Perform "Inspection After Repair" after replacing the air fuel ratio sensor.
Click here
|
|
17. |
CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Engine > Clear DTCs
(e) Turn the power switch off and wait for at least 30 seconds.
|
|
18. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P017100 OR P017200) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Trouble Codes.
(c) Read the DTCs.
Powertrain > Engine > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC P017100 or P017200 is output |
B |
| A |
|
END |
|
|
19. |
READ VALUE USING TECHSTREAM (MASS AIR FLOW SENSOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Put the engine in Inspection Mode (Maintenance Mode).
Click here
Powertrain > Hybrid Control > Utility
|
Tester Display |
|---|
|
Inspection Mode |
(e) Start the engine.
(f) Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.
Powertrain > Engine > Data List
|
Tester Display |
|---|
|
Engine Speed |
|
Mass Air Flow Sensor |
|
Coolant Temperature |
(g) Allow the engine to idle until Coolant Temperature is 75°C (167°F) or higher.
(h) Read Mass Air Flow Sensor with the engine speed at 2500 rpm.
HINT:
During charge control, the engine speed is set at idle. Therefore, the engine speed will not increase when the accelerator pedal is depressed. In this case, read the Data List after charge control has completed.
Standard:
|
Techstream Display |
Condition |
Specified Condition |
|---|---|---|
|
Mass Air Flow Sensor |
Engine warmed up Shift position: P A/C: Off Engine Speed: 2500 rpm |
Between 4.5 and 8.5 gm/sec |
|
|
20. |
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION) |
(a) Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM.
Click here
HINT:
Repair any problems.
|
|
21. |
CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Engine > Clear DTCs
(e) Turn the power switch off and wait for at least 30 seconds.
|
|
22. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P017100 OR P017200) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Trouble Codes.
(c) Read the DTCs.
Powertrain > Engine > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC P017100 or P017200 is output |
B |
| A |
|
END |
| B |
|
|
23. |
INSPECT EFI-MAIN NO. 2 RELAY |
(a) Inspect the EFI-MAIN NO. 2 relay.
Click here
| NG |
|
REPLACE EFI-MAIN NO. 2 RELAY |
|
|
24. |
CHECK TERMINAL VOLTAGE (POWER SOURCE OF EFI-MAIN NO. 2 RELAY) |
|
*1 |
No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly |
|
*2 |
EFI-MAIN NO. 2 Relay |
(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
5 (EFI-MAIN NO. 2 relay) - Body ground |
Always |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - EFI-MAIN NO. 2 RELAY) |
|
|
25. |
CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - BODY GROUND) |
(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 (EFI-MAIN NO. 2 relay) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
26. |
CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - AIR FUEL RATIO SENSOR) |
(a) Remove the EFI-MAIN NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(b) Disconnect the air fuel ratio sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 (EFI-MAIN NO. 2 relay) - A46-2 (+B) |
Always |
Below 1 Ω |
|
3 (EFI-MAIN NO. 2 relay) or A46-2 (+B) - Body ground and other terminals |
Always |
10 kΩ or higher |
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN NO. 1 RELAY - EFI-MAIN NO. 2 RELAY) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
27. |
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) |
(a) Disconnect the mass air flow meter sub-assembly connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C26-4 (VCC) - C147-108 (VCVG) |
Always |
Below 1 Ω |
|
C26-3 (FG) - C147-140 (VG) |
Always |
Below 1 Ω |
|
C26-2 (E2G) - C147-107 (E2G) |
Always |
Below 1 Ω |
|
C26-4 (VCC) or C147-108 (VCVG) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
C26-3 (FG) or C147-140 (VG) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
C26-2 (E2G) or C147-107(E2G) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
28. |
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY |
(a) Replace the mass air flow meter sub-assembly.
Click here
HINT:
- If the result of the inspection performed in steps 8 and 19 (READ VALUE USING TECHSTREAM (MASS AIR FLOW SENSOR)) indicated no problem, proceed to the next step without replacing the mass air flow meter sub-assembly.
-
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
Click here
|
|
29. |
CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Engine > Clear DTCs
(e) Turn the power switch off and wait for at least 30 seconds.
|
|
30. |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Trouble Codes.
(c) Read the DTCs.
Powertrain > Engine > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC P017100 or P017200 is output |
B |
| A |
|
END |
| B |
|
REPLACE ECM
|
|
|