DTC P0795, P0798, P0968, P0970, P0971 [5R55S]

id0502c1815500

DTC P0795

Pressure control solenoid C malfunction (low pressure)

DTC P0798

Pressure control solenoid C circuit malfunction (not operation)

DTC P0968

Pressure control solenoid C circuit malfunction (open circuit)

DTC P0970

Pressure control solenoid C circuit malfunction (short to ground)

DTC P0971

Pressure control solenoid C circuit malfunction (short to power supply)

DETECTION CONDITION

•  P0795: Incorrect shift pattern indicating mechanical or hydraulic failure in the transmission.

•  P0798: Incorrect gear ratio in 4GR and 5GR.

•  P0968: Open circuit in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit.

•  P0970: Short to ground in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit.

•  P0971: Short to power supply in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit.

POSSIBLE CAUSE

•  Pressure control solenoid C malfunction.

•  Short to ground in wiring harness between AT connector terminal I (wiring harness-side) and TCM terminal CK (wiring harness-side).

•  Short to ground in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side).

•  Short to power supply in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side).

•  Open circuit in wiring harness between AT connector terminal I (wiring harness-side) and TCM terminal CK (wiring harness-side).

•  Open circuit in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side).

•  Damaged connector between AT connector and TCM.

•  TCM malfunction.

DTC P0795	Pressure control solenoid C malfunction (low pressure)
DETECTION CONDITION	• P0795: Incorrect shift pattern indicating mechanical or hydraulic failure in the transmission. • P0798: Incorrect gear ratio in 4GR and 5GR. • P0968: Open circuit in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit. • P0970: Short to ground in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit. • P0971: Short to power supply in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit.
POSSIBLE CAUSE	• Pressure control solenoid C malfunction. • Short to ground in wiring harness between AT connector terminal I (wiring harness-side) and TCM terminal CK (wiring harness-side). • Short to ground in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side). • Short to power supply in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side). • Open circuit in wiring harness between AT connector terminal I (wiring harness-side) and TCM terminal CK (wiring harness-side). • Open circuit in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side). • Damaged connector between AT connector and TCM. • TCM malfunction.

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT AT CONNECTOR FOR POOR CONNECTION • Turn the engine switch to the LOCK position. • Inspect the AT connector connection. • Disconnect the AT connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is the connection normal?	Yes	Go to the next step.
3		No	Repair or replace the connector and/or terminals, then go to Step 10.
4	INSPECT POWER SUPPLY CIRCUIT • Turn the engine switch to the ON position (engine off). • Inspect voltage at AT connector terminal I (wiring harness-side). • Is the voltage approx. 12 V?	Yes	Go to the next step.
4		No	Go to Step 6.
5	INSPECT RESISTANCE • Turn the engine switch to the LOCK position. • Inspect resistance between AT terminal I and G (transmission case side). • Is resistance within 3.3—7.5 ohms? (See SOLENOID VALVE INSPECTION [5R55S].)	Yes	Go to the next step.
5		No	Replace the pressure control solenoid C, then go to Step 10.
6	INSPECT TCM CONNECTOR FOR POOR CONNECTION • Disconnect the TCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is the connection normal?	Yes	Go to the next step.
6		No	Repair or replace connector and/or terminals, then go to Step 10.
7	INSPECT PRESSURE CONTROL SOLENOID C CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between the TCM terminal (wiring harness-side) and the AT connector terminal (wiring harness-side). ― CK and I ― M and G • Is there continuity between terminals?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness, then go to Step 10.
8	INSPECT PRESSURE CONTROL SOLENOID C CIRCUIT FOR SHORT TO GROUND • Inspect for continuity between AT connector terminal (wiring harness-side) and body ground. ― I and body ground ― G and body ground • Is there continuity?	Yes	Repair or replace the wiring harness, then go to the Step 10.
8		No	Go to the next step.
9	INSPECT PRESSURE CONTROL SOLENOID C CIRCUIT FOR SHORT TO POWER SUPPLY • Turn the engine switch to the ON position (engine off). • Inspect the voltage at AT connector terminal G (wiring harness-side). • Is the voltage 0 V?	Yes	Go to the next step.
9		No	Repair or replace the wiring harness, then go to the next step.
10	VERIFY TROUBLESHOOTING OF DTC P0795, P0798, P0968, P0970 OR P0971 COMPLETED • Make sure to reconnect all the disconnected connectors. • Clear the DTC from memory using the IDS/PDS. • Perform the “After Repair Procedure”. (See AFTER REPAIR PROCEDURE [5R55S].) • Are any DTCs present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [5R55S].)
10		No	Go to the next step.
11	VERIFY DTCS • Are DTCs except for P0795, P0798, P0968, P0970 and P0971 output?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [5R55S].)
11		No	DTC troubleshooting completed.

DTC P0795	Pressure control solenoid C malfunction (low pressure)
DTC P0798	Pressure control solenoid C circuit malfunction (not operation)
DTC P0968	Pressure control solenoid C circuit malfunction (open circuit)
DTC P0970	Pressure control solenoid C circuit malfunction (short to ground)
DTC P0971	Pressure control solenoid C circuit malfunction (short to power supply)
DETECTION CONDITION	• P0795: Incorrect shift pattern indicating mechanical or hydraulic failure in the transmission. • P0798: Incorrect gear ratio in 4GR and 5GR. • P0968: Open circuit in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit. • P0970: Short to ground in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit. • P0971: Short to power supply in circuit between pressure control solenoid C and TCM, or in pressure control solenoid C internal circuit.
POSSIBLE CAUSE	• Pressure control solenoid C malfunction. • Short to ground in wiring harness between AT connector terminal I (wiring harness-side) and TCM terminal CK (wiring harness-side). • Short to ground in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side). • Short to power supply in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side). • Open circuit in wiring harness between AT connector terminal I (wiring harness-side) and TCM terminal CK (wiring harness-side). • Open circuit in wiring harness between AT connector terminal G (wiring harness-side) and TCM terminal M (wiring harness-side). • Damaged connector between AT connector and TCM. • TCM malfunction.