DTC 39

Code 39 Chart:

Wiring Diagram:

CIRCUIT DESCRIPTION:


The ECM controls TCC operation by grounding CKT 422 through the quad-driver.

Code 39 will set when:

^ No Code 28 is present.
^ Brake switch is not applied.
^ TCC is commanded by the ECM.
^ Transaxil is in high gear.
^ The engine speed to vehicle speed ratio does not indicate that the TCC is engaged.
^ All of the above for a time greater than 15 seconds.
^ Code 39 does not illuminate the "Service Engine Soon" light.



TEST DESCRIPTION: Numbers below refer to circled numbers on the diagnostic chart.

1. Checks ECM Relays fuse and brake switch.
2. Checks ECM for proper operation.
3. Checks the internal switches in the transaxle.



DIAGNOSTIC AIDS:

^ A Code 39 in combination with a Code 38 would mean a problem with one or more of the following components. Fuse, CKT 439, brake switch or CKT 420 before the splice.


^ A Code 39 only may be the result of a wire or CKT 420 problem between the splice and the TCC solenoid. CKT 422 problem between TCC solenoid and ECM, poor connection to ECM connector, or possibly the ECM.

^ If the ECM, TCC solenoid, and the TCC control circuitry are operating correctly but the TCC still does not engage properly, the problem could be hydraulic or mechanical.