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

Go to Diagnostic System Check - Vehicle

Turn the ignition to the START position.

Does the engine crank?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. With a scan tool, observe the Crank Request parameter in the powertrain control module (PCM) data list.
2. Turn the ignition switch to the START position.

Does the scan tool display Yes?

Go to Step 4

Go to Step 15

1. Install a scan tool.
2. With a scan tool, observe the Starter Relay Command parameter in the PCM data list.
3. Turn the ignition switch to the START position.

Does the scan tool display Yes?

Go to Step 9

Go to Step 5

1. With a scan tool, observe the Crank parameter in the body control module (BCM) data list.
2. Turn the ignition switch to the START position.

Does the scan tool display Yes?

Go to Step 6

Go to Step 16

1. With a scan tool, observe the Security Lamp State parameter in the Theft Deterrent data list.
2. Turn the ignition switch to the START position.

Does the scan tool display Off?

Go to Step 7

Go to Diagnostic Trouble Code (DTC) List - Vehicle

1. With a scan tool, observe the Crank parameter in the instrument panel cluster (IPC) data list.
2. Turn the ignition switch to the START position.

Does the scan tool display Yes?

Go to Step 8

Go to Step 17

1. Turn ON the ignition, with the engine OFF.
2. Verify that the transmission in Park or Neutral.
3. With a scan tool, observe the IMS parameter in the TCM data List.

Does the scan tool display Park or Neutral?

Go to Step 26

Go to Transmission Internal Mode Switch Logic for the automatic transaxle - 4T65-E

Turn the ignition to the START position.

Does the CRANK relay click?

Go to Step 12

Go to Step 10

1. Turn OFF the ignition.
2. Disconnect the crank relay.
3. Turn ON the ignition, with the engine OFF.
4. Connect a test lamp between the battery positive voltage circuit of the crank relay coil and a good ground.

Does the test lamp illuminate?

Go to Step 11

Go to Step 21

1. Connect a test lamp between the battery positive voltage circuit of the crank relay coil and the control circuit of the crank relay.
2. Turn the ignition to the START position.

Does the test lamp illuminate?

Go to Step 25

Go to Step 22

1. Turn OFF the ignition.
2. Disconnect the crank relay.
3. Connect a test lamp between the battery positive voltage circuit of the crank relay switch circuit and a good ground.

Does the test lamp illuminate?

Go to Step 13

Go to Step 31

Connect a 40-amp fused jumper between the battery positive voltage circuit of the starter relay switch circuit and the supply voltage circuit of the starter solenoid.

Does the engine crank?

Go to Step 25

Go to Step 14

Did the fuse in the jumper open?

Go to Step 23

Go to Step 24

1. Turn OFF the ignition.
2. Disconnect the PCM.
3. Connect a test lamp between the crank voltage circuit of the PCM and a good ground.
4. Turn the ignition to the Start position.

Does the test lamp illuminate?

Go to Step 26

Go to Step 18

1. Turn OFF the ignition.
2. Disconnect the BCM.
3. Connect a test lamp between the crank voltage circuit of the BCM and a good ground.

Does the test lamp illuminate?

Go to Step 27

Go to Step 19

1. Turn OFF the ignition.
2. Disconnect the IPC.
3. Connect a test lamp between the crank voltage circuit of the IPC and a good ground.

Does the test lamp illuminate?

Go to Step 28

Go to Step 20

Test the crank voltage circuit of the PCM for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 29

Test the crank voltage circuit of the BCM for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 29

Test the crank voltage circuit of the IPC for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 29

Test the battery positive voltage circuit of the starter relay coil for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 29

Test the control circuit of the CRANK relay for an open, high resistance or short to battery voltage. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 26

Test the supply voltage circuit of the starter solenoid for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 30

Test the supply voltage circuit of the starter solenoid for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 30

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 38

Go to Step 32

Inspect for poor connection at the PCM harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 33

Inspect for poor connection at the BCM harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 34

Inspect for poor connection at the IPC harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 35

Inspect for poor connections at the ignition switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 38

Go to Step 36

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 38

Go to Step 37

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 38

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Replace the crank relay.

Did you complete the replacement?

Go to Step 38

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Important: Perform the set up procedures for the PCM.

Replace the PCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 38

--

Important: Perform the set up procedures for the BCM.

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 38

--

Important: Perform the set up procedures for the IPC.

Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 38

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Replace the ignition switch. Refer to Ignition and Start Switch Replacement .

Did you complete the replacement?

Go to Step 38

--

Replace the starter motor. Refer to Starter Motor Replacement .

Did you complete the replacement?

Go to Step 38

--

Operate the system for which the symptom occurred.

Did you correct the condition?

System OK

Go to Step 2