Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026JRX |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 -
] |
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P14CE12,P14CE14,P241812,P241814; EVAP System Switching Valve Control Circuit "B" High Circuit Short to Battery; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] |
DTC
|
P14CE12
|
EVAP System Switching Valve Control Circuit "B" High Circuit Short to Battery
|
DTC
|
P14CE14
|
EVAP System Switching Valve Control Circuit "B" Low Circuit Short to Ground or Open
|
DTC
|
P241812
|
EVAP System Switching Valve Control Circuit High Circuit Short to Battery
|
DTC
|
P241814
|
EVAP System Switching Valve Control Circuit Low Circuit Short to Ground or Open
|
DESCRIPTION
Refer to EVAP (Evaporative Emission) System.
Click here
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
MIL
|
Memory
|
Note
|
P14CE12
|
EVAP System Switching Valve Control Circuit "B" High Circuit Short to Battery
|
Short in CCV B circuit for 0.5 seconds or more (1 trip detection logic).
|
-
Short in fuel vapor-containment valve circuit
-
Fuel vapor-containment valve
-
ECM
|
Comes on
|
DTC stored
|
-
SAE Code: P14D1
-
DTC for Mexico Models: Does not apply
|
P14CE14
|
EVAP System Switching Valve Control Circuit "B" Low Circuit Short to Ground or Open
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Open or short in CCV B circuit for 0.5 seconds or more (1 trip detection logic).
|
-
Open or short in fuel vapor-containment valve circuit
-
Fuel vapor-containment valve
-
ECM
|
Comes on
|
DTC stored
|
-
SAE Code: P14D0
-
DTC for Mexico Models: Does not apply
|
P241812
|
EVAP System Switching Valve Control Circuit High Circuit Short to Battery
|
Short in CCV A circuit for 0.5 seconds or more (1 trip detection logic).
|
-
Short in fuel vapor-containment valve circuit
-
Fuel vapor-containment valve
-
ECM
|
Comes on
|
DTC stored
|
-
SAE Code: P2420
-
DTC for Mexico Models: Does not apply
|
P241814
|
EVAP System Switching Valve Control Circuit Low Circuit Short to Ground or Open
|
Open or short in CCV A circuit for 0.5 seconds or more (1 trip detection logic).
|
-
Open or short in fuel vapor-containment valve circuit
-
Fuel vapor-containment valve
-
ECM
|
Comes on
|
DTC stored
|
-
SAE Code: P2419
-
DTC for Mexico Models: Does not apply
|
DTC No.
|
Monitoring Item
|
Detection Timing
|
Detection Logic
|
SAE Code
|
P14CE12
|
CCV B circuit range check (high current)
|
Always
|
1 trip
|
P14D1
|
P14CE14
|
CCV B circuit range check (low voltage)
|
P14D0
|
P241812
|
CCV A circuit range check (high current)
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P2420
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P241814
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CCV A circuit range check (low voltage)
|
P2419
|
MONITOR DESCRIPTION
These DTCs are stored if an open or short in the fuel vapor-containment valve circuit is detected.
Example:
-
If the CCA+, CCA-, CCB+ or CCB- operation signal is off, but the step motor output signal is on, the ECM determines that there is a short in the fuel vapor-containment valve circuit, and stores a DTC P14CE12 or P241812.
-
If the CCA+, CCA-, CCB+ or CCB- operation signal is on, and the step motor output signal is off, the ECM determines that there is an open or short in the fuel vapor-containment valve circuit, and stores a DTC P14CE14 or P241814.
MONITOR STRATEGY
Required Sensors/Components (Main)
|
Fuel vapor-containment valve
|
Required Sensors/Components (Related)
|
-
|
Frequency of Operation
|
Continuous
|
Duration
|
0.5 seconds
|
MIL Operation
|
Immediate
|
Sequence of Operation
|
None
|
TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored
|
None
|
Auxiliary battery voltage
|
10 V or higher
|
TYPICAL MALFUNCTION THRESHOLDS
P14D0
Both of the following conditions are met
|
-
|
Command to motor phase B
|
OFF
|
Either of the following conditions is met
|
A or B
|
A. Motor phase B positive terminal voltage level
|
Low
|
B. Motor phase B negative terminal voltage level
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Low
|
P14D1
Either of the following conditions is met
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A or B
|
A. Motor phase B positive terminal current detected by motor driver IC
|
2.5 A or more
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B. Motor phase B negative terminal current detected by motor driver IC
|
2.5 A or more
|
P2419
Both of the following conditions are met
|
-
|
Command to motor phase A
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OFF
|
Either of the following conditions is met
|
A or B
|
A. Motor phase A positive terminal voltage level
|
Low
|
B. Motor phase A negative terminal voltage level
|
Low
|
P2420
Either of the following conditions is met
|
A or B
|
A. Motor phase A positive terminal current detected by motor driver IC
|
2.5 A or more
|
B. Motor phase A negative terminal current detected by motor driver IC
|
2.5 A or more
|
CONFIRMATION DRIVING PATTERN
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Turn the ignition switch off and wait for at least 30 seconds.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Wait 5 seconds or more [A].
-
Enter the following menus: Powertrain / Engine / Trouble Codes [B].
-
Read the pending DTCs.
HINT:
-
If a pending DTC is output, the system is malfunctioning.
-
If a pending DTC is not output, perform the following procedure.
-
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
-
Input the DTC: P14CE12, P14CE14, P241812 or P241814.
-
Check the DTC judgment result.
GTS Display
|
Description
|
NORMAL
|
-
DTC judgment completed
-
System normal
|
ABNORMAL
|
-
DTC judgment completed
-
System abnormal
|
INCOMPLETE
|
-
DTC judgment not completed
-
Perform driving pattern after confirming DTC enabling conditions
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
-
Read Freeze Frame Data using the GTS. 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.
-
If the cable is disconnected from the Auxiliary Battery terminal, the fuel vapor containment valve cannot close completely and an EVAP SYSTEM DTC will be stored. If the DTC is output, drive the vehicle at a speed of 10 km/h (6 mph) or more and then leave the vehicle for 30 seconds or more. Then perform the Evaporative System Check again.
PROCEDURE
(a) Clear the DTC after recording the Freeze Frame Data and DTC.
Powertrain > Engine > Clear DTCs
(b) Turn the ignition switch off and wait for at least 30 seconds.
NEXT
|
|
|
2.
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READ OUTPUT DTC (IN ADDITION TO DTC P14CE12, P14CE14, P241812 OR P241814)
|
(a) Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
|
Proceed to
|
DTC P14CE12, P14CE14, P241812 or P241814 is output
|
A
|
DTCs are not output
|
B
|
A
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR
|
(a) Disconnect the ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A46-7 (CCA+) - A46-8 (CCA-)
|
20°C (68°F)
|
29 to 33 Ω
|
A46-20 (CCB+) - A46-21 (CCB-)
|
20°C (68°F)
|
29 to 33 Ω
|
A46-7 (CCA+) or A46-8 (CCA-) - Body ground and other terminals
|
Always
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10 kΩ or higher
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A46-20 (CCB+) or A46-21 (CCB-) - Body ground and other terminals
|
Always
|
10 kΩ or higher
|
HINT:
The standard values shown are fuel vapor-containment valve resistance values.
NG
|
|
|
4.
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INSPECT FUEL VAPOR CONTAINMENT VALVE
|
Click here
OK |
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REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL VAPOR-CONTAINMENT VALVE - ECM)
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|