AUTOMATIC TRANSAXLE (M13 ENGINE) 7B1-45
Diagnostic Flow Table A-3: “O/D OFF” Lamp Circuit Check (“O/D OFF” Lamp
Lights Steadily)
Wiring Diagram
Circuit Description
“O/D OFF” lamp operation of ON/OFF is controlled by transmission control module (TCM) and combination
meter.
When ignition switch is turned ON with O/D OFF switch OFF and malfunction is not detected, TCM turn “O/D
OFF” lamp ON only for 2 seconds to check bulb and terns it OFF.
Troubleshooting
1. TCM 4. O/D off switch
2. “O/D OFF” lamp [A]: Terminal arrangement of TCM connector (viewed from harness side)
3. To ignition switch
4
BLU/RED
12V
E12-11
E12-9
BLU/YEL
1
E13
11 9
E12
[A]
2
3
Step Action Yes No
1 Check O/D off switch status.
Press O/D off switch button.
Does “O/D OFF” lamp light steadily?
Go to Step 2. System is OK.
2Check “O/D OFF” lamp circuit for short.
1) Turn ignition switch OFF and disconnect
TCM connectors.
2) Turn ignition switch ON.
Does “O/D OFF” lamp light steadily yet?
“BLU/YEL” circuit shorted
to ground.
Go to Step 3.
3 Check O/D off switch circuit.
1) Turn ignition switch OFF.
2) Check continuity between terminal “E12-9”
of disconnected harness side connector
and ground.
Is continuity indicated?
Go to step 4. Substitute a known-good
TCM and recheck.
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