NO.31 M RANGE POSITION INDICATOR LIGHT DOES NOT ILLUMINATE IN M RANGE AND/OR IN D RANGE WITH DIRECT MODE/M RANGE POSITION INDICATOR LIGHT ILLUMINATES IN D RANGE WHILE NOT IN DIRECT MODE [SJ6A-EL]

id050307813500

31
M range position indicator light does not illuminate in M range and/or in D range with direct mode/M range position indicator light illuminates in D range while not in direct mode
DESCRIPTION
•  M range position indicator light in instrument cluster does not illuminate in M range and/or in D range in direct mode when ignition switch is in ON position.
•  M range position indicator light illuminates in D range while not in direct mode when ignition switch is in ON position.
POSSIBLE CAUSE
•  M range switch (built-in selector lever) malfunction
•  Steering shift switch malfunction
•  Open or short circuit in wiring harness between M range switch (built-in selector lever) and TCM
•  Open or short circuit in wiring harness between steering shift switch and TCM

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  Access the TCM PID MNL SW using the M-MDS.
•  Monitor the MLN SW PID with move the selector lever to all position and range.
•  Does the MNL SW PID indicate properly?
Yes
Go to the next step.
No
Inspect the M range switch.
(See SELECTOR LEVER COMPONENT INSPECTION.)
If the M range switch has a malfunction:
•  Replace the selector lever component.
If the M range switch is normal:
•  Inspect for continuity between manual switch terminal B and TCM terminal 2G.
•  Repair or replace the suspected wiring harness.
2
•  Access the TCM PIDs UP SW and DWN SW using the M-MDS.
•  Monitor the UP SW and DWN SW PIDs by pressing the steering shift switch while the selector lever is in the D range.
•  Are the UP SW and DWN SW PIDs indicated correctly?
Yes
Inspect the instrument cluster using the input/output test mode.
(See INSTRUMENT CLUSTER INSPECTION.)
Replace the instrument cluster, if necessary.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No
Inspect the steering shift switch.
(See STEERING SHIFT SWITCH INSPECTION.)
If the steering shift switch has a malfunction:
•  Replace the steering shift switch.
If the steering shift switch is normal:
•  Inspect for continuity between the following terminals:
―  Steering shift switch terminal F and TCM terminal 2AF.
―  Steering shift switch terminal C and TCM terminal 2AB.
•  Repair or replace the suspected wiring harness.
3
•  Verify test results.
―  If normal, return to the diagnostic index to service any additional symptoms.
―  If malfunction remains, inspect the related Service 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. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)