Pinpoint Test F: P1603. TCM EEPROM FAILURE
- DTC SET BY 3 POSSIBLE FACTORS.
Check battery voltage.
Has the battery been discharged to a voltage where the engine would not crank?
YES: Charge and test battery. INSTALL a new battery, if required. Refer to Battery, Mounting and Cables . CARRY out a drive-cycle. The transmission may lose it's adaptive values and will need to re-learn these values. These values will depend on the owner's driving style, and can only be learnt by normal use.
NO: Go to step 2.
- DTC SET BY 3 POSSIBLE FACTORS
Check the TCM for signs of water ingress.
Does the TCM show any indication of water ingress?
YES: INSTALL a new TCM and main control valve body. Refer to Automatic Transmission/Transaxle . CLEAR the DTC. TEST the system for normal operation.
NO: Go to step 3.
- DTC SET BY 3 POSSIBLE FACTORS
Check if the battery has been disconnected with the ignition switched on.
Has the battery been disconnected with the ignition switched on?
YES: Carry out a drive-cycle. For additional information, refer to the DTC section of JTIS. The transmission may lose it's adaptive values and will need to re-learn these values. These values will depend on the owner's driving style, and can only be learnt by normal use.
NO: INSTALL a new TCM and main control valve body. Refer to Automatic Transmission/Transaxle . CLEAR the DTC. TEST the system for normal operation.