HC. Checking the Suppressor Relay

HC. Checking the suppressor relay





HC1




Checking the suppressor relay
- Ignition off.
- Disconnect the suppressor relay.
Connect an ohmmeter between connector terminal 1 and GND.
The ohmmeter should read approx. 0 ohms.

If the reading is incorrect
^ check the GND point and its wiring for breaks in accordance with NA2. NA. Checking the Wiring




- Ignition off.
Connect an ohmmeter between terminal 3 on the connector and terminal 1 on one of the injectors.
The ohmmeter should read approx. 0 ohms.

If the reading is incorrect
^ check the wiring between terminal 3 and the injectors for breaks in accordance with NA2. NA. Checking the Wiring




- Ignition off.
- Disconnect all injectors and the cold start injector it there is one.
Connect an ohmmeter between terminals 3 and 1 on the connector. The ohmmeter should read infinite resistance.

If the reading is incorrect
^ check the wiring between terminal 3 and the injectors for grounding In accordance with NA3. NA. Checking the Wiring




- Ignition off.
Connect a voltmeter between terminals 4 and 1 on the connector.
The voltmeter should read battery voltage.

If the reading is incorrect
^ check the wiring between terminal 4 and the battery for breaks.




- Ignition on.
Connect a voltmeter between terminals 2 and 1 on the connector.
The voltmeter should read battery voltage.

If all readings are OK
^ try using a new suppressor relay.

If the reading is incorrect
^ check the wiring between terminal 2 on the suppressor relay and terminal 87/1 on the system relay.