Diagnostic Aids (Diesel Engine Only)
When starting a cold engine, glow plug cycle time can last 18 seconds with an after glow time of 30 seconds depending on engine temperature. Average glow plug amperage draw is 130 amps. The intake air heater may draw as high as 45 amps. Due to these high current draws the battery indicator may remain on until the amperage draw is reduced.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Starting and Charging Schematics Connector End View Reference: Engine Electrical Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Does the battery charge indicator remain illuminated? | -- | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
3 |
Are all of the voltages within the specified range? | 0.9-1.1 V | Go to Step 4 | Go to Step 5 |
4 | Are the voltages displayed within the specified range? | 12.8-15.5 V | Go to Step 5 | Go to Charging System Test |
5 | Test the battery positive voltage and ground circuits of the affected module for a high resistance or open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 6 |
6 | Inspect for poor connections at the harness connector of the affected module. Refer to Connector Repairs . Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 7 |
7 | Replace the affected module. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 8 | -- |
8 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
