The VTM-4 Lock Indicator Does Not Come On When the VTM-4 Lock Switch Is Pressed
The VTM-4 LOCK indicator does not come on when the VTM-4 LOCK switch is pressedNOTE: The VTM-4 LOCK indicator will only come on when the engine is running and the shift lever is in the R, 1, or 2 position before the switch is pressed.
1. Check the No. 11 (7.5 A) and No. 9 (10 A) fuses in the driver's under-dash fuse/relay box.
Are the fuses OK?
YES - Go to step 2.
NO - Replace the fuses, and recheck.
2. Turn the ignition switch ON (II), and check the VTM-4 LOCK indicator.
Does the VTM-4 LOCK indicator come on with the ignition switch ON (II), and does it go off 4 seconds later?
YES - Go to step 3.
NO - Go to step 10.
3. Start the engine, and move the shift lever to the R, 1, and 2 positions then check the VTM-4 LOCK indicator.
Does the VTM-4 LOCK indicator come on when the VTM-4 LOCK switch is pushed?
YES - The system is OK at this time.
NO - Go to step 4.
4. Check for DTCs in the A/T system with the HDS.
Are there any A/T DTC's indicated?
YES - Go to the indicated DTC's troubleshooting.
NO - Go to step 5.
5. Turn the ignition switch OFF.
6. Disconnect VTM-4 control unit connector A (22P) from the VTM-4 control unit.
7. Turn the ignition switch ON (II).
8. Measure voltage between the A8 terminal of the VTM-4 control unit and body ground.
Is there battery voltage when the VTM-4 LOCK switch is pushed?
YES - Check for loose terminal fit in the VTM-4 control unit connector. If it is normal, replace the VTM-4 control unit.
NO - Go to step 9.
9. Test the VTM-4 LOCK switch.
Is the VTM-4 LOCK switch OK?
YES - Repair open in the wire between the VTM-4 LOCK switch and the VTM-4 control unit.
NO - Replace the VTM-4 LOCK switch.
10. Connect the A16 terminal of the VTM-4 control unit to body ground with a jumper wire, and watch the VTM-4 LOCK indicator.
Does the VTM-4 LOCK indicator come on?
YES - Check for loose terminal fit in the VTM-4 control unit connector. If it is normal, replace the VTM-4 control unit.
NO - Go to step 11.
11. Turn the ignition switch OFF.
12. Remove the VTM-4 LOCK switch.
13. Connect the No. 3 terminal of the VTM-4 LOCK switch 7P connector to body ground with a jumper wire.
14. Check for continuity between the A16 terminal of the VTM-4 control unit and body ground.
Is there continuity?
YES - Go to step 15.
NO - Repair open in the wire between the A16 terminal and the VTM-4 LOCK switch.
15. Turn the ignition switch ON (II).
16. Measure voltage between the No. 2 terminal of the VTM-4 LOCK switch 7P connector and body ground.
Is there battery voltage?
YES - Replace the VTM-4 LOCK indicator bulb.
NO - Repair open in the wire between the No. 2 terminal of the VTM-4 LOCK switch 7P connector and the driver's under-dash fuse/relay box.