The VTM-4 Lock Indicator Does Not Come on For About 4 Seconds When the Ignition Switch Is Turned on (II)

The VTM-4 LOCK indicator does not come on for about 4 seconds when the ignition switch is turned ON (II)
1. Disconnect the VTM-4 control unit connector A (22P).
2. Turn the ignition switch ON (II).
3. Connect the No. 16 terminal of the VTM-4 control unit connector A (22P) to body ground with a jumper wire.





4. Watch the VTM-4 LOCK indicator.

Does the VTM-4 LOCK indicator come on?

YES - Check for poor connections or loose terminals at the VTM-4 control unit connectors. If the connections are OK, replace the VTM-4 control unit.

NO - Go to step 5.

5. Turn the ignition switch OFF.
6. Remove the VTM-4 LOCK switch.
7. Connect the No. 5 terminal of the VTM-4 LOCK switch 6P connector to body ground with a jumper wire.





8. Check for continuity between the No. 16 terminal of the VTM-4 control unit connector A (22P) and body ground.





Is there continuity?

YES - Go to step 9.

NO - Repair open in the wire between the VTM-4 control unit (A16) and the VTM-4 LOCK switch.

9. Turn the ignition switch ON (II).
10. Measure voltage between the No. 2 terminal of the VTM-4 LOCK switch 6P 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 6P connector and the driver's under-dash fuse/relay box.