Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - AB60F AUTOMATIC TRANSMISSION / TRANSAXLE
INSPECT NO. 1 TRANSMISSION WIRE (SHIFT SOLENOID VALVE S3)
CHECK HARNESS AND CONNECTOR (NO. 1 TRANSMISSION WIRE - ECM)
INSPECT SHIFT SOLENOID VALVE S3
DTC P0979 Shift Solenoid "C" Control Circuit Low (Shift Solenoid Valve S3)
DTC P0980 Shift Solenoid "C" Control Circuit High (Shift Solenoid Valve S3)
DESCRIPTION
Shifting from 1st to 6th is performed in combination with ON and OFF operation of the shift solenoid valves SL1, SL2, S1, S2, S3, S4 and SR, which are controlled by the ECM. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated safely. Also, the ECM stops sending the current to the open or short circuited solenoid ().
| DTC Code | DTC Detection Condition | Trouble Area |
| P0979 | ECM detects short in solenoid valve S3 circuit 2 times when solenoid valve S3 is operated (1 trip detection logic). | Short in shift solenoid valve S3 circuit Shift solenoid valve S3 ECM |
| P0980 | ECM detects open in solenoid valve S3 circuit 2 times when solenoid valve S3 is not operated (1 trip detection logic). | Open in shift solenoid valve S3 circuit Shift solenoid valve S3 ECM |
MONITOR DESCRIPTION
These DTCs indicate an open or short in the shift solenoid valve S3 circuit. When there is an open or short circuit in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores the DTC. When the shift solenoid valve S3 is ON, if its resistance is 8 Ω or less, the ECM determines there is a short in the shift solenoid valve S3 circuit.
When the shift solenoid valve S3 is OFF, if its resistance is 100 kΩ or more, the ECM determines there is an open in the shift solenoid valve S3 circuit ().
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Shift solenoid valve S3 is turned ON/OFF normally when the shift lever is in D.
| ECM gear shift command | 1st | 2nd | 3rd | 4th | 5th | 6th |
| Shift solenoid valve S3 | ON | ON | ON | OFF | OFF | OFF |
| 1.INSPECT NO. 1 TRANSMISSION WIRE (SHIFT SOLENOID VALVE S3) |
Disconnect the No. 1 transmission wire connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 7 (S3) - Body ground 20°C (68°F) 11 to 15 Ω
| *a | Component without harness connected (No. 1 Transmission Wire) |
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| OK | |
| 2.CHECK HARNESS AND CONNECTOR (NO. 1 TRANSMISSION WIRE - ECM) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C45-3 (S3) - Body ground 20°C (68°F) 11 to 15 Ω
| *a | Front view of wire harness connector (to ECM) |
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| OK | ||
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| 3.INSPECT SHIFT SOLENOID VALVE S3 |
Remove the shift solenoid valve S3.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition Shift solenoid valve S3 connector terminal - Shift solenoid valve S3 body 20°C (68°F) 11 to 15 Ω
Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.
- OK:
Measurement Condition Specified Condition Battery positive (+) → Shift solenoid valve S3 connectorBattery negative (-) → Shift solenoid valve S3 bodyValve moves and makes an operating noise
| *a | Component without harness connected (Shift Solenoid Valve S3) |
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| OK | ||
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