NO.28 GEAR POSITION INDICATOR LIGHT ILLUMINATES IN P, R, N AND D POSITION [FN4A-EL]

id050301525500

28
Gear position indicator light illuminate in P, R, N and D position
DESCRIPTION
•  Gear position indicator light in instrument cluster illuminates in P, R, N position and D position with the ignition at ON.
POSSIBLE CAUSE
•  M position switch (built-in selector lever component), instrument cluster, or related wiring harness malfunction
Note
•  Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [PCM (FN4A-EL)].) (See BASIC INSPECTION [FN4A-EL].)

Diagnostic procedure

STEP

INSPECTION

ACTION
1
Inspect the MNL SW PID value using the M-MDS.
(See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [PCM (FN4A-EL)].)
Is the PID value normal?
Yes
Go to Step 3.
No
Go to the next step.
2
Inspect the M position switch.
(See M POSITION SWITCH INSPECTION [FN4A-EL].)
Is the M position switch normal?
Yes
Inspect the wiring harness between PCM terminal 1N and selector lever component terminal A.
Repair or replace the any malfunctioning parts according to the inspection results.
No
Replace the M position switch.
(See M POSITION SWITCH REMOVAL/INSTALLATION [FN4A-EL].)
3
Retrieve the instrument cluster DTC using the M-MDS.
(See DTC INSPECTION [INSTRUMENT CLUSTER].)
Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
4
•  Verify the test results.
―  If normal, return to the diagnostic index to service any additional symptoms.
―  If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
•  If the vehicle is repaired, troubleshooting is completed.
•  If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 1.6].)