- DTC judgment completed
- System normal
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM10000000101M1 |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - 11/2017] |
| Title: UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: P079112,P079114,P079131; Intermediate Shaft Speed Sensor "A" Circuit Short to Battery; 2017 MY Sienna [08/2016 - 11/2017] | ||
|
DTC |
P079112 |
Intermediate Shaft Speed Sensor "A" Circuit Short to Battery |
|
DTC |
P079114 |
Intermediate Shaft Speed Sensor "A" Circuit Short to Ground or Open |
|
DTC |
P079131 |
Intermediate Shaft Speed Sensor "A" No Signal |
DESCRIPTION
The transmission revolution sensor (NC) detects the rotation speed of the counter gear which shows the output shaft speed of automatic transaxle assembly.
Based on the transmission revolution sensor (NC) signal and the transmission revolution sensor (NT) signals, the ECM controls engine torque and shift timing.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P079112 |
Intermediate Shaft Speed Sensor "A" Circuit Short to Battery |
1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
|
|
Comes on |
DTC stored |
SAE Code P07C6 |
|
P079114 |
Intermediate Shaft Speed Sensor "A" Circuit Short to Ground or Open |
1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
|
|
Comes on |
DTC stored |
SAE Code P07C5 |
|
P079131 |
Intermediate Shaft Speed Sensor "A" No Signal |
1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
|
|
Comes on |
DTC stored |
SAE Code P0793 |
MONITOR DESCRIPTION
The transmission revolution sensor (NC) monitors the output shaft speed.
The ECM commands gear changes and controls the lock up timing based on the signals from the transmission revolution sensor (NC) and throttle position sensor.
If the vehicle is being driven at 25 km/h (15.54 mph) or more and the speed sensor (NC) signal sent to the ECM is less than 300 rpm, or if the transmission revolution sensor (NC) input signal voltage is less than 0.1 V or more than 1.9 V, the ECM will illuminate the MIL and store a DTC.
MONITOR STRATEGY
|
Related DTCs |
P0793: Speed sensor (NC)/Verify pulse input P07C5: Speed sensor (NC)/Range check (Low voltage) P07C6: Speed sensor (NC)/Range check (High voltage) |
|
Required sensors/Components |
Speed sensor (NT), Speed sensor (NC) |
|
Frequency of operation |
Continuous |
|
Duration |
P0793, P07C5 and P07C6: 2 sec. |
|
MIL operation |
Immediate |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
All
|
Battery voltage |
8 V or more |
|
Ignition switch |
ON |
|
Starter |
OFF |
P0793
|
The monitor will run whenever the following DTCs are not present |
P07C5, P07C6 (Intermediate shaft speed sensor circuit) U0100 (CAN communication system) P2716 (Pressure control solenoid circuit) |
|
Intermediate shaft speed sensor range check fail (P07C5, P07C6) |
Not detected |
|
Vehicle speed |
25 km/h (15.54 mph) or more |
|
Shift change is completed and before starting next shift change operation |
- |
|
Park/neutral position switch |
OFF |
|
R range position switch |
OFF |
|
D range position switch |
ON |
|
Engine |
Running |
|
Pressure Control Solenoid circuit fail (P08C1, P08C2, P0962, P0963, P0966, P0967, P0970, P0971, P2720, P2721, P2814, P2815, P281D, P281E) |
Not detected |
|
Torque Converter Clutch Pressure Control Solenoid circuit fail (P2763, P2764) |
Not detected |
|
Torque Converter Clutch Solenoid circuit fail (P2769, P2770) |
Not detected |
-
One of the following condition is met: Condition (a), (b), (c), (d), (e), (f), (g) or (h)
Condition (a)
ECM selected gear
1st
Turbine Speed Sensor revolution
2390 rpm or more
Condition (b)
ECM selected gear
2nd
Turbine Speed Sensor revolution
1380 rpm or more
Condition (c)
ECM selected gear
3rd
Turbine Speed Sensor revolution
890 rpm or more
Condition (d)
ECM selected gear
4th
Turbine Speed Sensor revolution
620 rpm or more
Condition (e)
ECM selected gear
5th
Turbine Speed Sensor revolution
540 rpm or more
Condition (f)
ECM selected gear
6th
Turbine Speed Sensor revolution
440 rpm or more
Condition (g)
ECM selected gear
7th
Turbine Speed Sensor revolution
350 rpm or more
Condition (h)
ECM selected gear
8th
Turbine Speed Sensor revolution
300 rpm or more
-
One of the following condition is met: Condition (a) or (b)
Condition (a)
All of the following conditions are met
-
ECT
20°C (68°F) or more
ECT sensor circuit fail (P0117, P0118)
Not detected
Time after park/neutral position switch ON to OFF
2 seconds or more
Condition (b)
All of the following conditions are met
Conditions a and b
a. One of the following conditions is met
Conditions 1 or 2
1. ECT
Less than 20°C (68°F)
2. ECT sensor circuit fail (P0117, P0118)
Not detected
b. Time after park/neutral position switch ON to OFF
30 seconds or more
P07C5, P07C6
|
The monitor will run whenever the following DTCs are not stored |
P0793 (Intermediate shaft speed sensor verify pulse input) |
|
Intermediate shaft speed sensor pulse input fail (P0793) |
Not detected |
TYPICAL MALFUNCTION THRESHOLDS
P0793
|
Intermediate shaft speed sensor revolution |
Less than 300 rpm |
P07C5
|
Intermediate shaft speed sensor voltage |
Less than 0.1 V |
P07C6
|
Intermediate shaft speed sensor voltage |
More than 1.9 V |
COMPONENT OPERATING RANGE
|
Intermediate shaft speed sensor revolution |
300 rpm or more |
|
P07C5, P07C6: Intermediate shaft speed sensor voltage |
0.1 V or more and 1.9 V or less |
CONFIRMATION DRIVING PATTERN
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
- After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
-
When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.
Click here
![2017 - 2020 MY Sienna [08/2016 - ]; UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the Techstream on.
- Start the engine.
-
Perform the D Position Shift Test inspection in Road Test. [*1]
Click here
HINT:
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Stop the vehicle.
- Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
- Input the DTC: P079112, P079114 or P079131.
-
Check the DTC judgment result.
Techstream Display
Description
NORMAL
ABNORMAL
- DTC judgment completed
- System abnormal
INCOMPLETE
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A
- Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
Perform the universal trip to clear permanent DTCs.
Click here
-
Perform registration and/or initialization when parts related to the automatic transaxle are replaced.
Click here
DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON.
(e) Turn the Techstream on.
(f) Enter the following menus: Powertrain / Transmission / Data List / NC Sensor Speed.
(g) Read the Data List according to the display on the Techstream.
Transmission
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
NC Sensor Speed |
Counter gear speed |
Min.: 0 rpm Max.: 12750 rpm |
- |
- |
HINT:
- NC Sensor Speed is always 0 while driving: Open or short in the sensor or circuit.
- NC Sensor Speed is always more than 0 and less than 300 rpm while driving the vehicle at 16 km/h (10 mph) or more: Sensor malfunction, improper installation, or intermittent connection malfunction in the circuit.
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (NC SENSOR SPEED AND NC SENSOR VOLTAGE) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Transmission / Data List / NC Sensor Speed and NC Sensor Voltage.
(e) Read the Data List according to the display on the Techstream.
Transmission
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
NC Sensor Speed |
Counter gear speed |
Min.: 0 rpm Max.: 12750 rpm |
- |
- |
|
NC Sensor Voltage |
NC sensor voltage |
Min.: 0.000 V Max.: 4.999 V |
0.1 to 1.9 V: Engine idling |
- |
|
Result |
Proceed to |
|---|---|
|
Data List value is normal |
A |
|
Data List value is not normal |
B |
| A |
|
|
|
2. |
INSPECT TRANSMISSION REVOLUTION SENSOR (NC) (NC TERMINAL) |
|
(a) Disconnect the transmission wire connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B65-21 (NCO) - Body ground |
Always |
99 to 101 Ω |
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
B65-22 (NCB) - Body ground |
Ignition switch to ON |
11 to 14 V |
| NG |
|
|
|
3. |
INSPECT TRANSMISSION WIRE (TRANSMISSION REVOLUTION SENSOR (NC)) |
|
(a) Disconnect the transmission revolution sensor (NC) connector. Click here
|
|
(b) Disconnect the B65 transmission wire connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
Transmission revolution sensor (NC) connector terminal 1 - B65-22 (NCB) |
Always |
Below 1 Ω |
|
Transmission revolution sensor (NC) connector terminal 2 - B65-21 (NCO) |
Always |
Below 1 Ω |
|
Transmission revolution sensor (NC) connector terminal 1 or B65-22 (NCB) - Body ground |
Always |
10 kΩ or higher |
|
Transmission revolution sensor (NC) connector terminal 2 or B65-21 (NCO) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE TRANSMISSION WIRE |
|
4. |
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
(a) Disconnect the B65 transmission wire connector.
(b) Disconnect the B67 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B65-22 (NCB) - B67-73 (NCB) |
Always |
Below 1 Ω |
|
B65-21 (NCO) - B67-72 (NCO) |
Always |
Below 1 Ω |
|
B65-22 (NCB) or B67-73 (NCB) - Body ground |
Always |
10 kΩ or higher |
|
B65-21 (NCO) or B67-72 (NCO) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM) |
|
|
5. |
REPLACE ECM |
(a) Replace the ECM.
Click here
| NEXT |
|
|
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