NO.28 GEAR POSITION INDICATOR LIGHT ILLUMINATE IN P, R OR N POSITION [AY6A-EL, AY6AX-EL]

id0503k3333900

28 | Gear position indicator light illuminate in P, R or N position
DESCRIPTION | • Gear position indicator light in instrument cluster illuminates in P, R or N position and ignition switch at ON.
POSSIBLE CAUSE | • M position switch (built-in selector lever component), instrument cluster, or related wiring harness malfunction • Multiplex communication system malfunction (Shift position signal is incorrect.) ― Between TCM and instrument cluster Note • Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION [AY6A-EL, AY6AX-EL].)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Retrieve any instrument cluster DTCs using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].) • Are there any CAN communication DTCs displayed? | Yes | Go to appropriate the DTC inspection. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].) (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
No | Go to the next step.
2 | • Inspect the TCM PID MNL SW value using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [AY6A-EL, AY6AX-EL].) • Is the PID value normal? | Yes | Go to Step 4.
No | Go to the next step.
3 | • Inspect the M position switch. (See SELECTOR LEVER COMPONENT INSPECTION.) • Is the M position switch normal? | Yes | Inspect for open circuit in wiring harness between TCM terminal A7 and selector lever component terminal C. Repair or replace any malfunctioning part.
No | Replace the M position switch. (See SELECTOR LEVER COMPONENT REMOVAL/INSTALLATION.)
4 | • Inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION.) • Is instrument cluster normal? | Yes | Go to the next step.
No | Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
5 | • Verify test results. ― If normal, return to the diagnostic index to service any additional symptoms. ― If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. • If the vehicle is repaired, troubleshooting completed. • If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.