Step | Action | Yes | No | ||||
---|---|---|---|---|---|---|---|
Schematic Reference: Starting and Charging Schematics | |||||||
1 | Did you perform the Engine Electrical Diagnostic System Check? | 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 in Wiring Systems | Go to Step 3 | ||||
3 | Turn the ignition switch to the START position. Does the starter motor relay click? | Go to Step 11 | Go to Step 4 | ||||
4 | Is the vehicle equipped with a manual transmission? | Go to Step 5 | Go to Step 7 | ||||
5 |
Does the scan tool display Released/Applied? | Go to Step 7 | Go to Step 6 | ||||
6 |
Does the test lamp illuminate? | Go to Step 7 | Go to Step 8 | ||||
7 |
Does the test lamp illuminate? | Go to Step 19 | Go to Step 8 | ||||
8 |
Does the test light illuminate? | Go to Step 9 | Go to Step 10 | ||||
9 |
Does the test light illuminate? | Go to Step 17 | Go to Step 14 | ||||
10 |
Does the test lamp illuminate? | Go to Step 18 | Go to Step 15 | ||||
11 |
Does the test lamp illuminate? | Go to Step 12 | Go to Step 23 | ||||
12 | Connect a 30-amp fused jumper between the battery positive voltage circuit of the starter motor relay switch circuit and the supply voltage circuit of the starter solenoid. Does the engine crank? | Go to Step 17 | Go to Step 13 | ||||
13 | Does the fuse in the jumper open? | Go to Step 24 | Go to Step 16 | ||||
14 | Test the control circuit of the starter motor relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 25 | ||||
15 | Test the supply voltage circuit of the starter motor relay coil circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 21 | ||||
16 | Test the supply voltage circuit of the starter solenoid for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 22 | ||||
17 | Inspect for poor connections at the starter motor relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 25 | ||||
18 |
Did you find and correct the condition? | Go to Step 29 | Go to Step 26 | ||||
19 | Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 20 | ||||
20 |
Important: The replacement PCM must be programmed. Replace the PCM. Refer to Powertrain Control Module Replacement in Engine Controls - 4.8L, 5.3L, and 6.0L. Is action complete? | Go to Step 29 | -- | ||||
21 | Inspect for poor connections at the ignition switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 27 | ||||
22 | Inspect for poor connections at the starter solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 28 | ||||
23 | Repair the open or high resistance in the battery positive voltage circuit of the starter motor relay switch circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 29 | -- | ||||
24 | Repair the short to ground in the supply voltage circuit of the starter solenoid. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 29 | -- | ||||
25 | Replace the starter relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 29 | -- | ||||
26 | Replace the PNP switch. Refer to Park/Neutral Position Switch Replacement in Automatic Transmission-4L60-E or Park/Neutral Position Switch Replacement in Automatic Transmission-4L80-E. Did you complete the replacement? | Go to Step 29 | -- | ||||
27 | Replace the ignition switch. Refer to Ignition and Start Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 29 | -- | ||||
28 | Replace the starter. Refer to Starter Motor Replacement . Did you complete the replacement? | Go to Step 29 | -- | ||||
29 | Operate the system for which the symptom occurred. Did you correct the condition? | System OK | Go to Step 2 |