RX8Club.com - RX-8 4 Speed AT Problem

NO.29 GEAR POSITION INDICATOR LIGHT DOES NOT ILLUMINATE IN M RANGE

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BHE050301026W34

29
Gear position indicator light does not illuminate in M range

DESCRIPTION
• Gear position indicator light in instrument cluster illuminates in M range with ignition switch at ON.
POSSIBLE CAUSE
• M range switch, gear position indicator light or related wiring harness malfunction
Note
• Before following the troubleshooting steps, make sure that the Automatic Transmission On-Board Diagnostic and Automatic Transmission Basic Inspection are conducted. (See BASIC INSPECTION.)

BASIC INSPECTION

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BHE050301026W03

STEP

INSPECTION

ACTION

1 Perform mechanical system test.
(See MECHANICAL SYSTEM TEST.)
Is mechanical system normal? Yes Go to the next step.
No Repair or replace any malfunctioning parts according to the inspection result.
2 Turn the ignition switch to the ON position.
When the selector lever is moved, does the selector illumination indicate synchronized position to the lever location? Also, when other ranges are selected from N or P during idling, does the vehicle move within 1-2 s? Yes Go to the next step.
No Inspect the selector lever and TR switch. Repair or replace malfunctioning parts.
(See SELECTOR LEVER INSPECTION.)
(See TRANSMISSION RANGE (TR) SWITCH INSPECTION.)
If the selector lever and TR switch are normal, go to the next step.
3 Inspect ATF color and condition.
(See AUTOMATIC TRANSMISSION FLUID (ATF) INSPECTION.)
Are ATF color and odor normal? Yes Go to the next step.
No Repair or replace any malfunctioning parts according to the inspection result.
Flush AT and cooler line if necessary.
4 Perform the line pressure test.
(See Line Pressure Test.)
Is the line pressure normal? Yes Go to the next step.
No Repair or replace any malfunctioning parts according to the inspection result.
5 Perform the stall test.
(See Stall Speed Test.)
Is the stall speed normal? Yes Go to the next step.
No Repair or replace any malfunctioning parts according to the inspection result.
6 Inspect the voltage at the following TCM terminals.
(See TCM INSPECTION.)
• Terminal 2J (TFT sensor)
• Terminals 1D, 2B, 2C, 2E (TR switch)
• Terminal 2G (turbine sensor)
• Terminal 2D (down switch)
• Terminal 2I (up switch)
• Terminal 1E (M range switch)
• Terminal 1W (steering shift switch)
Is the voltage normal? Yes Go to the next step.
No Repair or replace any malfunctioning parts according to the inspection result.
7 Inspect the value at the following PCM PIDs using the WDS or equivalent.
(See PCM INSPECTION.)
• B+
• APP1
• APP2
• ECT
• RPM
• TP_REL
• VSS
Are PID values normal? Yes Perform the symptom troubleshooting and follow the procedures.
No Repair or replace any malfunctioning parts according to the inspection result.

Diagnostic procedure

STEP

INSPECTION

ACTION

1 Are other indicator lights illuminated with the ignition switch at the ON position? Yes Go to the next step.
No Inspect the meter fuse.
2 Inspect the voltage at TCM terminal 1E.
(See TCM INSPECTION.)
Is the voltage normal? Yes Inspect the instrument cluster.
No Repair or replace any malfunctioning part.
3 Verify the test results.
• If normal, return to the diagnostic index to service any additional symptoms.
• If the 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.
(See TCM REMOVAL/INSTALLATION.)