Schematic References: Starting and Charging Schematics

Connector End View Reference: Master Electrical Component List in Wiring Systems

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

Turn the ignition to the START position.

Does the engine crank?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the Crank Request Signal parameter in the powertrain control module (PCM) data list.
4. Turn the ignition to the START position.

Does the scan tool display Yes?

Go to Step 4

Go to Step 11

1. Turn ON the ignition, with the engine OFF.
2. Verify that the transmission is in Park or Neutral.
3. With the scan tool, observe the IMS parameter in the powertrain control module (PCM) data list.

Does the scan tool display Park or Neutral?

Go to Step 5

Go to Range Selector Displays Incorrect Range in Automatic Transaxle - 4T80-E

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

Does the test lamp illuminate?

Go to Step 6

Go to Step 19

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

Does the test lamp illuminate?

Go to Step 7

Go to Step 12

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

Does the test lamp illuminate?

Go to Step 8

Go to Step 10

Connect a 30-amp fused jumper between the battery positive voltage of the starter relay switch circuit and the starter solenoid crank voltage circuit.

Does the engine crank?

Go to Step 14

Go to Step 9

Does the fuse in the jumper open?

Go to Step 20

Go to Step 16

Test the battery positive voltage circuit of the starter relay switch for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

--

1. Turn OFF the ignition.
2. Disconnect the PCM harness connectors.
3. Connect a test lamp between the crank request signal circuit of the PCM and a good ground.
4. Turn the ignition to the START position.

Does the test lamp illuminate?

Go to Step 18

Go to Step 13

Test the control circuit of the starter relay for an open, short to ground or a short to battery voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 15

Test the crank request signal circuit for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 17

Inspect for poor connections at the starter 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 26

Go to Step 22

Inspect for poor connections at the PCM 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 26

Go to Step 25

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

Did you find and correct the condition?

Go to Step 26

Go to Step 23

Inspect for poor connections at the ignition switch. 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 26

Go to Step 24

Inspect for poor connection at the PCM 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 26

Go to Step 25

Repair an open or high resistance in the battery positive voltage of the starter relay coil circuit. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

--

Repair a short to ground in the crank voltage circuit of the starter solenoid. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

--

Repair an open or high resistance in the crank voltage circuit of the starter solenoid. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

--

Replace the starter relay.

Did you complete the replacement?

Go to Step 26

--

Replace the starter motor. Refer to Starter Motor Replacement .

Did you complete the replacement?

Go to Step 26

--

Replace the ignition switch. Refer to Ignition and Start Switch Replacement in Instrument Panel, Gages and Console.

Did you complete the replacement?

Go to Step 26

--

Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 26

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2