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On Board Diagnostic Logic DTC No. DTC DEFINITION DTC Detection Condition DTC Set Condition POSSIBLE CAUSES 31 Reverse/low (R/L) solenoid malfunction Vehicle is driving • The Transaxle • If the DTC was • Solenoid • Harness or • TCM DTC Confirmation Procedure: Before performing the following procedure, confirm that battery voltage is more than 12 V. • Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available. • After connection, press POWER key to start X-431. • Turn ignition switch on, with the scan tool, view and erase stored DTCs in the TCM. • Start engine and warm it to normal operating temperature, then select ⬙D⬙ position. • Drive the vehicle in 1st, 2nd, 3rd and 4th gears. • With the scan tool, select view DTC and data stream. • If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1. • If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou- bleshooting in Section 08 Transaxle & Transfer Case for more information). NOTE : Diagnostic Procedure 1. CHECK A/T SOLENOID SIGNAL • With the scan tool, select view DTC and data stream for A/T. • Start the engine. • Monitor the value of the gear position as indicated in the following table while driving: GEAR POSITION ELECTRO-MAGNETIC VALVE L/R GEAR 2 UD OD DCC (REF) Gear 1 Off On Off On Off Gear 2 On Off Off On On Gear 3 On Off Off Off On Gear 4 On Off On Off On Reverse gear Off On On On Off Neutral gear/ Parking Off On On On Off DIAGNOSIS & TESTING
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