Toyota Camry (XV70): Intermediate Shaft Speed Sensor "A" Circuit Short to Battery (P079112,P079114,P079131)
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) signal, 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 |
All of the following conditions are met (1-trip detection logic):
|
| Comes on |
DTC stored | SAE Code P07C6 |
| P079114 |
Intermediate Shaft Speed Sensor "A" Circuit Short to Ground or Open |
All of the following conditions are met (1-trip detection logic):
|
| Comes on |
DTC stored | SAE Code P07C5 |
| P079131 |
Intermediate Shaft Speed Sensor "A" No Signal |
All of the following conditions are met (1-trip detection logic):
|
| Comes on |
DTC stored | SAE Code P0793 |
|
Vehicle Condition | |||||
|---|---|---|---|---|---|
|
Pattern 1 | Pattern 2 |
Pattern 3 | Pattern 4 | ||
|
Diagnostic Condition | The battery voltage is 8 V or more. |
○ | ○ |
○ | ○ |
|
Park/neutral position switch D input signal is ON. |
○ | ○ |
○ | ○ | |
|
The vehicle speed is 25 km/h (16 mph) or more. |
○ | ○ |
○ | ○ | |
|
When the vehicle is being driven in 1st gear, the transmission revolution sensor (NT) value is 2390 rpm or more. |
○ | - |
- | - | |
|
When the vehicle is being driven in 2nd gear, the transmission revolution sensor (NT) value is 1380 rpm or more. |
- | ○ |
- | - | |
|
When the vehicle is being driven in 3rd gear, the transmission revolution sensor (NT) value is 890 rpm or more. |
- | - |
○ | - | |
|
When the vehicle is being driven in 4th gear, the transmission revolution sensor (NT) value is 620 rpm or more. |
- | - |
- | ○ | |
|
Malfunction Condition | Speed indicated by transmission revolution sensor (NC) is less than 300 rpm. |
○ | ○ |
○ | ○ |
|
Duration | 2 seconds or more |
2 seconds or more | 2 seconds or more |
2 seconds or more | |
|
Detection Logic | 1-trip detection logic |
1-trip detection logic |
1-trip detection logic |
1-trip detection logic | |
|
Vehicle Condition | |||||
|---|---|---|---|---|---|
|
Pattern 5 | Pattern 6 |
Pattern 7 | Pattern 8 | ||
|
Diagnostic Condition | The battery voltage is 8 V or more. |
○ | ○ |
○ | ○ |
|
Park/neutral position switch D input signal is ON. |
○ | ○ |
○ | ○ | |
|
The vehicle speed is 25 km/h (16 mph) or more. |
○ | ○ |
○ | ○ | |
|
When the vehicle is being driven in 5th gear, the transmission revolution sensor (NT) value is 540 rpm or more. |
○ | - |
- | - | |
|
When the vehicle is being driven in 6th gear, the transmission revolution sensor (NT) value is 440 rpm or more. |
- | ○ |
- | - | |
|
When the vehicle is being driven in 7th gear, the transmission revolution sensor (NT) value is 350 rpm or more. |
- | - |
○ | - | |
|
When the vehicle is being driven in 8th gear, the transmission revolution sensor (NT) value is 300 rpm or more. |
- | - |
- | ○ | |
|
Malfunction Condition | Speed indicated by transmission revolution sensor (NC) is less than 300 rpm. |
○ | ○ |
○ | ○ |
|
Duration | 2 seconds or more |
2 seconds or more | 2 seconds or more |
2 seconds or more | |
|
Detection Logic | 1-trip detection logic |
1-trip detection logic |
1-trip detection logic |
1-trip detection logic | |
HINT:
DTC P079131 is stored when any of the above detection patterns is met.
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 (16 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 |
2 sec. |
| MIL operation |
Immediate |
| Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
All|
Battery voltage | 8 V or more |
|
Engine switch | On (IG) |
|
Starter | OFF |
|
The monitor will run whenever the following DTCs are not stored |
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) (Pending / MIL) | Not detected |
|
Vehicle speed | 26 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) (Pending + MIL) | Not detected |
|
Torque converter clutch pressure control solenoid circuit fail (P2763, P2764) (Pending + MIL) | Not detected |
|
Torque converter clutch solenoid circuit fail (P2769, P2770) (Pending + MIL) |
Not detected |
- One of the following conditions is met: Condition (A), (B), (C), (D), (E), (F), (G) or (H) Condition (A)
Condition (B)ECM selected gear
1st
Turbine speed sensor revolution
2390 rpm or more
Condition (C)ECM selected gear
2nd
Turbine speed sensor revolution
1380 rpm or more
Condition (D)ECM selected gear
3rd
Turbine speed sensor revolution
890 rpm or more
Condition (E)ECM selected gear
4th
Turbine speed sensor revolution
620 rpm or more
Condition (F)ECM selected gear
5th
Turbine speed sensor revolution
540 rpm or more
Condition (G)ECM selected gear
6th
Turbine speed sensor revolution
440 rpm or more
Condition (H)ECM selected gear
7th
Turbine speed sensor revolution
350 rpm or more
ECM selected gear
8th
Turbine speed sensor revolution
300 rpm or more
- Either of the following conditions is met: Condition (I) or (J) Condition (I)
ECT
20
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DTC No. Detection Item
DTC Detection Condition Trouble Area
MIL Memory
Note P079514
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Summary of functions
In vehicle-to-vehicle distance control mode, the vehicle automatically
accelerates and decelerates to match the speed changes of the preceding
vehicle even if the accelerator pedal is not depressed. In constant
speed control mode, the vehicle runs at a fixed speed.
Use the
Precaution
PRECAUTION INITIALIZATION NOTICE: Make sure to perform the necessary procedures (adjustment, calibration, initialization, or registration) after parts related to the cooling fan system have been removed/installed or replaced.
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