Checking the 15-supply to the control module

Fig 1: Identifying Ignition ON

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Fig 2: Disconnecting Control Unit

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• Switch off the ignition.
• Control module disconnected.
• Ignition on.

  Connect a voltmeter between terminals 13 and 16 on the breakout box.

  Fig 3: Breakout Box

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  Fig 4: Identifying Voltage Display

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The voltmeter should read approximately battery voltage. 

• OK 

  FAULT NOT FOUND:  Troubleshooting has been completed.

• NOT OK 

  Refer to Checking fuse 23