volvo Workshop Repair Guides

Volvo Workshop Service and Repair Manuals

Battery and Ground Supply For ECM|Page 3276 > < Battery and Ground Supply For ECM
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Removing Protective Cover

5.

Remove connector protective sleeve.
CAUTION:^ 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 Pin 18

6.

Turn ignition ON.

7.

Connect a voltmeter between pin 18 at ECU connector and ground (checking ignition switch).

Reading: approx. 12 volts

 

8.

If not, check wiring and connectors. If no fault found, replace ignition switch and retest.

9.

Crank starter motor.

Reading: no less than 10.5 volts

If not, check wiring and connectors. If no fault found, replace ignition switch and retest.

10.

Turn ignition OFF.

Battery and Ground Supply For ECM|Page 3276 > < Battery and Ground Supply For ECM