Checking Combination Relay [EM15]

Checking Combination Relay





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

Connect a temporary lead between #1 and #34 on test box.

Connect a voltmeter between #1 and #3 on test box.

- Ignition on.

When the ignition is switched on, relay should trip and voltmeter should read approx. battery voltage.

- Ignition off.
- Remove the temporary lead.

If reading is OK:
- DTC was due to poor contact in control module connector or combination relay 15-pin connector. Check connectors for contact resistance and oxidation as per HA6. Contact Resistance and Oxidation [HA6]

If reading is incorrect:
- Try another combination relay.