Starter Solenoid Does Not Click
Starter Solenoid Does Not Click
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The engine control module (ECM) controls engine cranking based on a power mode input. When a power mode crank request is seen, the ECM applies voltage to the starter relay coil control circuit. This energizes the coil side of the relay, which pulls the switch side of the relay closed, applying voltage to the starter solenoid.
Reference Information
Schematic Reference
Starting and Charging Schematics Electrical Diagrams
Connector End View Reference
Component Connector End Views Sunshade - Left (DH6)
Description and Operation
Starting System Description and Operation Description and Operation
Electrical Information Reference
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Circuit Testing Circuit Testing
* Wiring Repairs Wiring Repairs
* Connector Repairs Connector Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
Warning
After disconnecting, disassembling or replacing this Flex-Door relevant component, the following system safety check must be carried out:
Initiate a system check by accelerating to a minimum speed of 4 km/h or above; neither the Flex-Door malfunction indicator light in the instrument cluster should illuminate nor any Flex-door warning chime should be audible.
1. Verify that no starter relay, immobilizer, or automatic transmission DTCs are set that may cause the ECM to disable starting.
• If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
2. Ignition ON, observe the scan tool Ignition 1 Signal parameter with a scan tool. The reading should be greater than 10.0 V.
• If less than the specified value, test the ECM IGN fuse, the RUN/CRNK relay, and the ignition voltage circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
3. Turn the ignition switch to the START position. The starter solenoid should engage and the engine should crank.
• If the solenoid does not engage, refer to Starter Relay Malfunction.
• If the solenoid engages but the engine does not crank, refer to Starter Solenoid Clicks, Engine Does Not Crank Starter Solenoid Clicks, Engine Does Not Crank.
Circuit/System Testing
Warning
After disconnecting, disassembling or replacing this Flex-Door relevant component, the following system safety check must be carried out:
Initiate a system check by accelerating to a minimum speed of 4 km/h or above; neither the Flex-Door malfunction indicator light in the instrument cluster should illuminate nor any Flex-door warning chime should be audible.
Starter Relay Malfunction
1. Ignition OFF, disconnect the KR27 Starter Relay.
2. Disconnect the negative terminal of the C1 Battery.
3. Test for less than 5 ohms between the relay ground circuit terminal 2 and ground.
• If greater than the specified value, test the ground circuit for an open/high resistance.
4. Reconnect the negative terminal of the C1 Battery.
5. Verify that a test lamp illuminates between the B+ circuit terminal 3 and ground.
• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
6. Connect a test lamp between the relay coil ground circuit terminal 2 and the relay coil control circuit terminal 1.
7. Ignition ON, turn the ignition switch between the start and run positions. The test lamp should turn ON and OFF when changing between the commanded states.
• If the test lamp is always ON, test the relay coil control circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.
• If the test lamp is always OFF, test the relay coil control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
8. Connect the KR27 Starter Relay.
9. Install a test lamp between the M64 Starter Motor terminal 1 X2 and ground.
Note: The engine may begin to crank.
10. Ignition ON, turn the ignition switch to the start position. The test lamp should illuminate.
• If the test lamp does not illuminate, test the starter control circuit for an open/high resistance. If the circuit tests normal, test or replace the KR27 Starter Relay.
11. If all circuits test normal, test or replace the M64 Starter Motor.
Component Testing
Warning
After disconnecting, disassembling or replacing this Flex-Door relevant component, the following system safety check must be carried out:
Initiate a system check by accelerating to a minimum speed of 4 km/h or above; neither the Flex-Door malfunction indicator light in the instrument cluster should illuminate nor any Flex-door warning chime should be audible.
Relay Test
1. Ignition OFF, disconnect the KR27 Starter Relay.
2. Test for 60-180 ohms between terminals 2 and 1.
• If not within the specified range, replace the KR27 Starter Relay.
3. Test for infinite resistance between the following terminals:
* 3 and 1
* 3 and 5
* 3 and 2
* 2 and 5
• If not the specified value, replace the KR27 Starter Relay.
4. Install a 20 A fused jumper wire between relay terminal 2 and 12 V. Install a jumper wire between relay terminal 1 and ground. Test for less than 2 ohms between terminals 3 and 5.
• If greater than specified range, replace the KR27 Starter Relay.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Starter Replacement (LF1) Starter Replacement (LF1)Starter Replacement (LE9) Starter Replacement (LE9)
* Control Module References Control Module References for ECM replacement, setup and programming