Central Locking System

General
1. Check that fuse 16 is intact and supplied with current.
2. Check the connectors, wiring harness and ground connections.
1. Check that terminal 4 of the control module is supplied with current.
2. Check that current is supplied to pin 8 of the control module when the doors are being unlocked and to pin 7 when they are being locked.

IMPORTANT:
Control module terminals 7 and 8 are live for only about 1 second, so readings on them must be taken at the precise moment when the locking mechanism changes position. In the inactivated position, both outputs are grounded.

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