Skylark V6-191 3.1L VIN M SFI (1994)
Electronic PRNDL Display: Initial Inspection and Diagnostic Overview
Circuit Operation
The Electronic PRNDL Display feature indicates the transaxle gear selector position to the driver by using the Park/Neutral Position Switch and the
Electronic PRNDL Control Module. Battery voltage is supplied to the Electronic PRNDL Control Module with the Ignition Switch in the "OFF" and in
"RUN," and to the Park/Neutral Position Switch in "RUN," "BULB TEST," or "START."
The Electronic PRNDL Control Module has 4 transaxle position inputs which are either switched to ground or left open by the Park/Neutral Position
Switch, depending on the transaxle position selected. The Electronic PRNDL Control Module decodes these inputs and lights the corresponding PRNDL
indicator.
The Electronic PRNDL Control Module has a lights-ON input (CKT 8) that causes the PRNDL display to dim to the present dimmer control level with
the Park Lights or Headlights ON.
Preliminary Diagnosis
Refer to the Symptom Table for the appropriate diagnostic procedures. See: Symptom Related Diagnostic Procedures/A Symptom Table
Troubleshooting Hints
PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Check PRNDL Fuse by visual inspection.
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Refer to Powertrain Management for Park/Neutral Position Switch access. See: Powertrain Management
^
Refer to System Diagnosis. See: Preliminary Diagnosis
