Toyota Camry (XV70): Input/Turbine Speed Sensor "A" Circuit Short to Battery (P071512,P071514,P071531)
DESCRIPTION
The transmission revolution sensor (NT) detects the input shaft rotation speed and sends it to the ECM.
Based on the transmission revolution sensor (NT) signal and the transmission revolution sensor (NC) signals, the ECM controls engine torque and shift timing. Based on the input shaft rotation speed and the engine speed signal, lock-up control is performed.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Memory |
Note |
|---|---|---|---|---|---|---|
| P071512 |
Input/Turbine Speed Sensor "A" Circuit Short to Battery |
All of the following conditions are met (1-trip detection logic):
|
| Comes on |
DTC stored | SAE Code: P07C0 |
| P071514 |
Input/Turbine 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: P07BF |
| P071531 |
Input/Turbine Speed Sensor "A" No Signal |
All of the following conditions are met (1-trip detection logic):
|
| Comes on |
DTC stored | SAE Code: P0717 |
MONITOR DESCRIPTION
The NT terminal of the ECM detects a pulse signal from the transmission revolution sensor (NT) (input RPM). The ECM calculates gear shifts by comparing input signals of the transmission revolution sensor (NT) with the transmission revolution sensor (NC).
While the vehicle is being driven in 1st, 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear with the shift lever in D, if the input shaft revolution (speed) is less than 300 rpm* when the vehicle speed is 22 km/h (14 mph) or more, the ECM interprets this as a malfunction, illuminates the MIL and stores a DTC.
*: Pulse is not output or is irregularly output.
MONITOR STRATEGY
|
Related DTCs | P0717: Speed sensor (NT)/Verify pulse input P07BF: Speed sensor (NT)/Range check (Low voltage) P07C0: Speed sensor (NT)/Range check (High voltage) |
|
Required sensors/components | Speed sensor (NT), Speed sensor (NC) |
|
Frequency of operation | Continuous |
|
Duration | P0717: 5 sec. P07BF, P07C0: 4.5 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 |
None |
| Turbine speed sensor range check fail (P07BF, P07C0) (Pending / MIL) | Not detected |
|
Vehicle speed sensor | 26 km/h (15.54 mph) or more |
|
Intermediate shaft speed sensor revolution |
490 rpm 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 |
|
Vehicle speed sensor monitor condition is met |
- |
|
The monitor will run whenever the following DTCs are not stored |
None |
| Turbine speed sensor pulse input fail (P0717) (Pending / MIL) | Not detected |
|
Intermediate shaft speed sensor revolution |
300 rpm or more |
|
Shift change is completed and before starting next shift change operation |
- |
| R range position switch |
OFF |
| D range position switch |
ON |
| Park/neutral position switch |
OFF |
| 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 |
- Condition (A)
Condition (B)ECM selected gear
1st
Turbine speed sensor revolution
1450 rpm or more
Condition (C)ECM selected gear
2nd
Turbine speed sensor revolution
840 rpm or more
Condition (D)ECM selected gear
3rd
Turbine speed sensor revolution
540 rpm or more
Condition (E)ECM selected gear
4th
Turbine speed sensor revolution
400 rpm or more
Condition (F)ECM selected gear
5th
Turbine speed sensor revolution
330 rpm or more
Condition (G)ECM selected gear
6th
Turbine speed sensor revolution
300 rpm or more
Condition (H)ECM selected gear
7th
Turbine speed sensor revolution
300 rpm or more
ECM selected gear
8th
Turbine speed sensor revolution
300 rpm or more
- Condition (I)
ECT
20
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