DTC P0973 (Flash Code 31) Shift Solenoid A (SL) Control Circuit Low (AWR6B45)

1. Transmission control system check

Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) diagnostic system check-transmission controls".

2. Current DTC check

1) Connect the scan tool.

2) Turn OFF the ignition switch for 30 seconds or more.

3) Start the engine and operate the vehicle in the D range and 2nd gear or higher.

4) Observe the DTC information with a scan tool. Is a DTC set?

Yes

=>Go to Shift solenoid (SL) control circuit voltage check.

Go to Intermittent conditions of automatic transmission.

Refer to "206.Transmission, Transaxle 19D.Symptom(AWR6B45) Intermittent conditions of automatic transmission".

3. Shift solenoid (SL) control circuit voltage check

1) Turn OFF the ignition switch.

2) Disconnect the transmission internal harness (E42).

3) Connect a test lamp between the shift solenoid (SL) control circuit (pin 1 of E42) of the transmission internal harness and the body ground.

Refer to "LHD Automatic Transmission" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Automatic Transmission" in the ETM (wiring diagram). (Open using the ETM viewer.).

4) Turn ON the ignition switch. Does the test lamp illuminate and then turn OFF?

Note

If the circuit is normal, the test lamp illuminates, and then turns OFF.

Yes

=>Go to Inspection of transmission internal harness.

=>Go to Inspection for short to ground in shift solenoid (SL) control circuit.

4. Inspection for short to ground in shift solenoid (SL) control circuit

1) Inspect the shift solenoid (SL) control circuit between the TCM (pin 28 of E5) and the transmission internal harness (pin 1 of E42) for a short to ground. Is the result normal?

Refer to "LHD Automatic Transmission" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Automatic Transmission" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to TCM replacement.

Repair the circuit as necessary.

=>Go to Repair verification.

5. Inspection of transmission internal harness

1) Inspect the control circuit between the transmission internal harness (pin 1 of E42) and the shift solenoid (SL) for a short to ground. Is the result normal?

Refer to "LHD Automatic Transmission" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Automatic Transmission" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

Replace the valve body assembly.

Note

After replacing the valve body assembly, clear the self-learning data with a scan tool.

Refer to "5.Transmission, Transaxle 5B.Automatic(AWR6B45) transmission removal".

Refer to "5.Transmission, Transaxle 5B.Automatic(AWR6B45) transmission disassembly".

Refer to "5.Transmission, Transaxle 5B.Automatic(AWR6B45) transmission reassembly".

Refer to "5.Transmission, Transaxle 5B.Automatic(AWR6B45) transmission installation".

=>Go to Repair verification.

Repair the circuit as necessary.

=>Go to Repair verification.

6. TCM replacement

Note

Perform programming after replacing the TCM.

Refer to "5.Transmission, Transaxle 5Z.Transmission Electrical Control(AWR6B45) TCM removal".

Refer to "5.Transmission, Transaxle 5Z.Transmission Electrical Control(AWR6B45) TCM installation".

Refer to "5.Transmission, Transaxle 5Z.Transmission Electrical Control(AWR6B45) TCM setting".

Procedure completion

=>Go to Repair verification.

7. Repair verification

1) Clear the DTC with a scan tool.

Note

The ECM sets DTC P0700 if the TCM sets emission related DTCs. Clear the ECM DTC after clearing the TCM DTC.

2) Turn OFF the ignition switch for 30 seconds or more.

3) Start the engine and operate the vehicle in the D range and 2nd gear or higher.

4) Observe the DTC information with a scan tool.