Checking Supply to Control Module From Combination Relay [GB5]

Checking Supply To Control Module From Combination Relay





- Ignition off.
- Disconnect control module.
- Disconnect combination relay 15-pin connector.
- Ignition on.

Connect a voltmeter between #1 and #33 on test box.

Voltmeter should read approx. 0 V.

If reading is OK:
- Try another combination relay.

If reading is incorrect:
- Check lead between combination relay 15-pin connector terminal 10 and control module #33 for short-circuit to supply as per HA4. Short Circuit to Supply [HA4]