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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - Pinpoint Tests - (Hybrid)) >> Pinpoint Test TP: Traction Motor OVERSPEED >> Test Procedure

Test Procedure

WARNING: This page is about a different variant/trim than selected.
  1. TP1 CHECK FOR CORRECT TRACTION MOTOR RPM DURING THE ROAD TEST 
    NOTE: Refer to the table at the beginning of this pinpoint test for correct traction motor to vehicle speed correlations.
    • Clear the TCM DTCs.
    • Access the TCM and monitor the M_SPEED PID.
    • Access the TCM and monitor the VSS PID.
    • Road test the vehicle.
    • Record traction motor RPM at different vehicle speeds.

    Does the traction motor RPM correspond with the vehicle speed? 

    Yes No
    GO to  TP2. INSTALL a new transaxle assembly. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS .
  2. TP2 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTC) 

    Is DTC P0C2F present? 

    Yes No
    GO to PINPOINT TEST DP . Unable to duplicate or identify the concern at this time.
    RETURN to part 3, Symptom Charts to continue diagnosis.