Ignition ECU Input

TESTING PROCEDURE:

NOTE: While trouble shooting, always check the wiring, fuses and connectors for good condition and routing. Use the wiring diagrams found in CHASSIS ELECTRICAL DIAGRAMS to supplement your testing efforts.

Accessing Ignition ECU Connector:

1. Turn ignition OFF.
2. Access ignition ECU by removing the panel under left hand side of instrument panel.
3. Remove ECU connector by pushing out the catch and folding out the wire cluster.

Checking Ground Connections:

4. Check ignition ECU ground connections at intake manifold. They should make good contact.

Removing Protective Cover:

5. Remove connector protective sleeve.
IMPORTANT: ^ Never check connections from the front. Connectors can get damaged and worsen the problem.
^ Check connections through the holes in the connector.
^ Connection pin numbers are printed on the connector side.

Checking Terminal Pins:

6. Check that terminal contacts have been pushed down evenly in connector.
7. If any connectors have been pushed down to far, poor connection may result.

Checking Pin 6:

7. Turn ignition ON.
8. Check main power supply by connecting a voltmeter between pin 6 (blue) in ECU connector and ground.

Reading: approx. 12 volts

9. If no voltage registers, check wire between ECU and fuse-box located behind the center console ash tray. Check fuse #12, #13 and wiring to ignition switch. Repair as necessary.
If no fault found, replace ignition switch and retest.
10. Turn ignition OFF.
11. After testing, disconnect all test equipment, reconnect all connectors (including the ECU connector) and remount all panels.