Chassis S7010001 & Later

FAULT DIAGNOSIS HINTS
1. Check that fuses 25 and 20 are intact and supplied with current.
2. Check that current is present on pins 9 and 3 of the control module.
3. Check that current is present on pin 7 of the control module when the doors are being locked and on pin 8 when they are being unlocked.

IMPORTANT
Since pins 7 and 8 of the control module are supplied with current for only about 1 second, instrument readings must be taken at the exact moment the locking mechanism switches over.

Note also that the actuating motors (on testing) should be connected only to pins 7 and 8 of the control module. Otherwise the motors could be overloaded and damaged.

When the control module is not activated, pins 7 and 8 are both connected to ground.
4. Check the connectors, wiring harness and ground connections.