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 connector A (22P) from the VTM-4 control unit.
2. Turn the ignition switch ON (II).





3. 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 connectors. If it is normal, replace the VTM-4 control unit.
NO - Go to step 4

4. Turn the ignition switch OFF.
5. Remove the VTM-4 lock switch.





6. Connect the No. 5 terminal of the VTM-4 lock switch 6P connector to body ground with a jumper wire. Check for continuity between the A16 terminal and body ground.
Is there continuity?
YES - Go to step 7.
NO - Repair open in the wire between the A16 terminal of the VTM-4 control unit and the VTM-4 lock switch.

7. Turn the ignition switch ON (II).





8. Measure the 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 use/relay box.