Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) diagnostic system check-transmission controls".
1) Connect the scan tool.
2) Turn OFF the ignition switch for 30 seconds or more.
3) Start the engine and operate the vehicle for 10 minutes or more.
4) Observe the Transmission Fluid Temperature 1 (TFT1) parameter on the scan tool. Is the Transmission Fluid Temperature 1 (TFT1) parameter 20°C {68°F} or less?
Yes
=>Go to Transmission internal harness and TCM harness connector inspection.
No
Go to Intermittent conditions of automatic transmission.
Refer to "206.Transmission, Transaxle 19D.Symptom(AWR6B45) Intermittent conditions of automatic transmission".
1) Inspect for poor connections at the transmission internal harness connector (pins 3 and 4 of E42). Is the result normal?
2) Inspect for poor connections at the TCM harness connector (pins 23 and 24 of E5). 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.).
3) Are all of the results normal?
Yes
=>Go to Inspection for high resistance in transmission fluid temperature sensor 1 circuit.
No
Repair the connections as necessary.
1) Inspect the transmission fluid temperature sensor 1 signal circuit between the TCM (pins 23 and 24 of E5) and the transmission internal harness (pins 3 and 4 of E42) for high resistance. 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 transmission internal harness.
Refer to "5.Transmission, Transaxle 5B.Automatic(AWR6B45) transmission disassembly".
Refer to "5.Transmission, Transaxle 5B.Automatic(AWR6B45) transmission reassembly".
No
Repair the circuit as necessary.
1) Clear the DTC with a scan tool.
Note
2) Turn OFF the ignition switch for 30 seconds or more.
3) Start the engine and operate the vehicle for 10 minutes or more.
4) Observe that the Transmission Fluid Temperature 1 (TFT1) parameter on the scan tool indicates 20°C {68°F} or less.
5) Observe the DTC information with a scan tool.