DTC List - Transmission Control

Symptom-to-Component Chart / Trouble Code Descriptions





Self-Diagnosis (D4) Indicator Light Inspection
If the self-diagnosis (D4) indicator light does not blink, perform an inspection according to the table.

Diagnostic Notes:
- If a customer describes the symptoms for codes 3, 6, 11, 14 or 1 5, yet the (D4) indicator light is not blinking, it will be necessary to recreate the symptom by test driving, and then checking the (D4) indicator light with the ignition still ON.
- If the (D4) indicator light displays codes 1, 2, 3, 7, 8, 11 or 16, check first the No. 2, 1 2, 1 5, 18 and 33 fuse before electrical troubleshooting. If any of the fuses have blown, repair them and then recheck.
- If the (D4) indicator light displays codes other than those listed above or stays lit continuously, the A/T control unit is faulty.
- Sometimes the (D4) indicator light and the Check Engine light may come on simultaneously. If so, check the PGM-FI system according to the number of blinks on the ECU self-diagnosing indicator, then reset the memory by removing the No. 39 BACK UP fuse in the under-hood relay/fuse box for more than 10 seconds. Drive the vehicle for several minutes at speeds over 30 mph (50 Km/h), then recheck the lights.

NOTE: Disconnecting the No. 39 BACK UP fuse also cancels the radio preset stations and the clock setting. Make note of the radio presets before removing the fuse so you can reset them.