Operation CHARM: Car repair manuals for everyone.

P0985

Diagnostic Chart:




Schematic:




Shift solenoid 5 is used to affect shift pressure. Shift solenoid 5 is turned electrically ON/hydraulically open, relieving pressure from the M3 shift valve, during 2nd-3rd, and 3rd-4th gear shifts. The transaxle control module (TCM) controls shift solenoid 5 by controlling an internal driver that pulls the solenoid circuit to voltage. Circuit 2527 is monitored for low and high voltage feedback. DTC P0985 sets when shift solenoid 5 is commanded electrically ON and the feedback voltage at the TCM is low.

DTC PARAMETERS
DTC P0985 sets when shift solenoid 5 is commanded ON and the feedback voltage at the TCM is low and:
^ The engine is running
^ Transaxle Protection Mode is OFF
^ Shift solenoid 4 commanded ON
^ Condition exists for a least 500 ms

The TCM will command Transaxle Protection Mode ON if this DTC is active.

DTC P0985 is a type A DTC.

DIAGNOSTIC AIDS
To locate an intermittent problem, use a Scan tool to monitor SHIFT SOLENOID 5 CKT STATUS with solenoid 5 commanded ON. Wiggling wires while watching for a change on SHIFT SOLENOID 5 CKT STATUS may locate the area where a short to ground in the wiring could lie.

Shift solenoid 5 resistance: 8.4-22.6 ohms