The starter solenoid plays an important role in the starting system by connecting battery power to the starter motor and engaging the starter drive gear with the flywheel. When the ignition key is turned to the start position, the solenoid receives power through the starter control circuit and activates the starter motor.
Faults in the solenoid or control circuit can prevent the starter from operating correctly even when the battery and starter motor are in good condition.
Starter solenoid problems
• Solenoid fails to engage when ignition key is turned
• Solenoid engages but starter motor does not rotate
• Starter remains engaged after engine starts
• Starter clicks repeatedly but does not crank
These problems may be caused by worn solenoid contacts, damaged wiring or low battery voltage.
Starter control circuit faults
• Broken or loose wiring connections
• Excessive resistance in the ignition switch circuit
• Faulty ignition switch
• Corroded electrical connectors
• Poor grounding in the starter circuit
Electrical faults in the control circuit can prevent sufficient current from reaching the solenoid.
Testing the starter circuit
• Inspect battery terminals and starter cables for corrosion
• Check that all electrical connections are clean and secure
• Test the ignition switch circuit for proper voltage supply
• Check solenoid operation using jumper lead testing
A jumper wire can be used to bridge the ignition starting switch terminals to determine whether the switch or control circuit is responsible for the fault.
The starting system used on HK, HT and HG Holden vehicles is generally very reliable, but worn wiring connections or ageing electrical components can eventually lead to intermittent starting problems.
While this guide helps identify common engine problems, the Holden workshop manuals available from Car Manuals Direct provide the original specifications, adjustment settings and repair procedures used by Holden mechanics when these vehicles were new.