SYMPTOM RELATED DIAGNOSTICS

ENGINE BRAKE VERBAL COMPLAINT (continued)

Test 514

Checking for bad connections at the V-MAC II module

1.Turn the ignition key to the OFF position.

2.Disconnect the J1B connector from the V-MAC II module.

3.Visually inspect both the harness and module sides of the connector for a bent or broken pin P3, or evidence of an open or short to ground around pin P3. Repair the damage if possible.

If there is no evidence of damage, continue with the next step.

4.Find the gray J 35616-2 male test lead from the J 38581 V-MAC jumper wire kit. Align the male test lead with the female pin P3 in the harness side of the J1B connector. Gently push the test lead into the connector pin, being careful to align the lead with the rectangular pin.

If the pin in the connector feels loose, repair or replace the pin in the connector. Retest to be sure the problem has been corrected.

If the pin does not feel loose, replace the V-MAC II module. Retest to be sure the problem has been corrected.

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