Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Start the engine. Observe the charge indicator on the instrument cluster (IPC) . Does the charge indicator illuminate or message center (DIC) display a charging system message? | -- | Go to Step 3 | |
3 |
Important: The green POWER lamp of the tester should remain illuminated while the tester is being used.
Does the green POWER lamp on the tester illuminate? | -- | Go to Step 6 | Go to Step 4 |
4 | Measure the voltage from the output terminal of the generator to the generator metal housing. Does the voltage measure equal to the specified value? | 12 V | Go to Step 14 | Go to Step 5 |
5 | Measure the voltage from the output terminal of the generator to the battery negative terminal. Does the voltage measure equal to the specified value? | 12 V | Go to Step 12 | Go to Step 11 |
6 |
Important: Ensure that all generator output circuit wires pass through the inductive probe. Does the red DIAGNOSTIC lamp on the tester illuminate? | -- | Go to Step 7 | Go to Step 13 |
7 |
Does the red DIAGNOSTIC lamp on the tester illuminate? | -- | Go to Step 15 | Go to Step 8 |
8 |
Important: If the generator is not capable of producing the Load Test amps, operate the generator at it's maximum possible output. Does the red DIAGNOSTIC lamp on the tester illuminate? | -- | Go to Step 15 | Go to Step 9 |
9 |
Does the voltage measure greater than the specified value? | 0.5 V | Go to Step 11 | Go to Step 10 |
10 |
Does the voltage measure greater than the specified value? | 0.5 V | Go to Step 12 | Go to Step 16 |
11 | Repair the high resistance or an open in the output circuit of the generator. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 16 | -- |
12 | Repair the high resistance or open in the ground circuit of the generator. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 16 | -- |
13 |
Does the red DIAGNOSTIC lamp illuminate? | -- | Go to Step 15 | Go to Step 14 |
14 | There is a problem with the J 41450-B . Refer to the manufacturers instructions, how to test the J 41450-B for proper operation. Has the J 41450-B tester been replaced? | -- | Go to Step 3 | -- |
15 | Replace the generator. Refer to Generator Replacement . Did you complete the replacement? | -- | Go to Step 16 | -- |
16 | Operate the vehicle in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
Step | Action | Value(s) | Yes | No | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |||||||||||
2 | With ignition OFF, install the Midtronics Digital Battery Analyzer and verify the condition of the battery. Is the battery sufficiently charged for testing? | -- | Go to Step 3 | Go to Battery Inspection/Test | ||||||||||
3 |
Does the voltage increase from the first specified (engine OFF) to the second (engine ON specified range)? | Engine Off = B+ Engine On = 13.9-15.5 V | Go to Step 4 | Go to Step 6 | ||||||||||
4 |
Is voltage still within the specified value? | 13.9-15.5 V | Go to Step 5 | Go to Step 6 | ||||||||||
5 |
Important: When measuring generator output current, be sure the inductive probe encircles the generator output wire. Is the generator output greater than or equal to the load test value as specified in Generator Usage ? | -- | System OK | Go to Step 10 | ||||||||||
6 |
Is the voltage greater than the specified value? | 0 V | Go to Step 11 | Go to Step 7 | ||||||||||
7 |
Is the voltage within the specified value? | 3 V or above | Go to Step 8 | Go to Step 12 | ||||||||||
8 |
Does the scan tool display near the indicated value? | 0% | Go to Step 9 | Go to Step 13 | ||||||||||
9 | Connect a test lamp to B+ and repeatedly touch the F-terminal at the generator harness connector while monitoring the GEN-F terminal signal parameter on the scan tool. Does the scan tool indicate that the generator PWM is above the specified range? | 90% | Go to Step 10 | Go to Step 14 | ||||||||||
10 |
Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 15 | ||||||||||
11 | Test the L-terminal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 16 | ||||||||||
12 | Test the L-terminal circuit for open or short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 16 | ||||||||||
13 | Test the GEN-F terminal for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 16 | ||||||||||
14 | Test the GEN-F terminal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 16 | ||||||||||
15 | Inspect for poor connections at the generator. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 18 | ||||||||||
16 | Inspect for poor connections at the harness connector of the generator battery control module (GBCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 17 | ||||||||||
17 | Replace the GBCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 19 | -- | ||||||||||
18 | Replace the generator. Refer to Generator Replacement . Did you complete the replacement? | -- | Go to Step 19 | -- | ||||||||||
19 | Operate the vehicle in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |