Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Starting and Charging Schematics Connector End View Reference: Master Electrical Component List | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Turn the ignition switch to the start position. Does the engine crank? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 |
Does the scan tool display ON? | Go to Step 5 | Go to Step 4 |
4 |
Does the scan tool display Park/Neutral? | Go to Step 6 | |
5 | Turn the ignition switch to the start position. Did the crank relay click? | Go to Step 8 | Go to Step 6 |
6 |
Does the test lamp illuminate? | Go to Step 7 | Go to Step 15 |
7 |
Does the test lamp illuminate? | Go to Step 8 | Go to Step 12 |
8 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 17 |
9 |
Important: Ensure the parking brake is applied and the transmission is in park equipped with an automatic transmission or neutral on a manual transmission. Connect a 30-amp fused jumper between the battery positive voltage circuit of the crank relay switch circuit and the supply voltage circuit of the starter solenoid. Does the engine crank? | Go to Step 13 | Go to Step 10 |
10 | Does the fuse in the jumper open? | Go to Step 18 | Go to Step 11 |
11 | Test the supply voltage circuit of the starter solenoid for a high resistance or open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 14 |
12 | Test the ground circuit of the crank relay for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 22 | -- |
13 | Inspect for poor connections at the crank relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
14 | Inspect for poor connections at the starter solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 20 |
15 | Repair an open or high resistance in the control circuit of the crank relay coil. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 22 | Go to Step 16 |
16 | Inspect for poor connections at the harness connector of the ECM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 21 |
17 | Repair the open or high resistance in the battery positive voltage circuit of the crank relay switch. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 22 | -- |
18 | Repair the short to ground in the supply voltage circuit of the starter solenoid. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 22 | -- |
19 | Replace the crank relay. Did you complete the replacement? | Go to Step 22 | -- |
20 | Replace the starter motor. Refer to Starter Motor Replacement . Did you complete the replacement? | Go to Step 22 | -- |
21 | Replace the ECM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 22 | -- |
22 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Starting and Charging Schematics Connector End View Reference: Master Electrical Component List | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Turn the ignition switch to the START position. Does the engine crank? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Is the security indicator flashing? | Go to Step 4 | |
4 |
Does the scan tool display Yes? | Go to Step 5 | Go to Step 13 |
5 |
Does the scan tool display Yes? | Go to Step 6 | Go to Step 14 |
6 |
Does the scan tool display Park or Neutral? | Go to Step 7 | |
7 | Turn the ignition switch to the START position. Do you hear the CRANK relay click? | Go to Step 10 | Go to Step 8 |
8 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 23 |
9 |
Does the test lamp illuminate? | Go to Step 18 | Go to Step 16 |
10 |
Does the test lamp illuminate? | Go to Step 11 | Go to Step 24 |
11 |
Important: Ensure the parking brake is applied and the transmission is in park equipped with an automatic transmission or neutral on a manual transmission. Connect a 30-amp fused jumper between the battery positive voltage circuit of the CRANK relay switch and the starter solenoid crank voltage circuit. Does the engine crank? | Go to Step 17 | Go to Step 12 |
12 | Does the fuse in the jumper open? | Go to Step 25 | Go to Step 15 |
13 |
Does the test lamp illuminate? | Go to Step 21 | Go to Step 17 |
14 |
Does the test lamp illuminate? | Go to Step 22 | Go to Step 17 |
15 | Test the starter solenoid crank voltage circuit for a high resistance or open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 31 | Go to Step 19 |
16 | Test the control circuit of the CRANK relay for an open or short to battery voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 31 | Go to Step 22 |
17 | Test the crank voltage circuit of the BCM for a high resistance or open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition. | Go to Step 31 | Go to Step 20 |
18 | Inspect for poor connections at the CRANK relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 31 | Go to Step 26 |
19 | Inspect for poor connections at the starter solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 31 | Go to Step 27 |
20 | Inspect for poor connections at the ignition switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 31 | Go to Step 28 |
21 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 31 | Go to Step 29 |
22 | Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 31 | Go to Step 30 |
23 | Repair an open or high resistance in the battery positive voltage circuit of the CRANK relay coil. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 31 | -- |
24 | Repair the open or high resistance in the battery positive voltage circuit of the CRANK relay switch. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 31 | -- |
25 | Repair the short to ground in the starter solenoid crank voltage circuit. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 31 | -- |
26 | Replace the CRANK relay. Did you complete the replacement? | Go to Step 31 | -- |
27 | Replace the starter motor. Refer to Starter Motor Replacement . Did you complete the replacement? | Go to Step 31 | -- |
28 | Replace the ignition switch. Refer to Ignition and Start Switch Replacement . Did you complete the replacement? | Go to Step 31 | -- |
29 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 31 | -- |
30 | Replace the PCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 31 | -- |
31 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |