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2026. 6. 30. 작업

증상

'09 Chevy Malibu - No Crank, No Start - Heavy Troubleshooting Already Completed

처리 내용

On GMs now adays the Engine Control Module controls the starter relay. It will look for a park/neutral signal from the range switch and a crank signal from the ignition switch/Body Control Module. A break down of the starter relay terminals. If you pull the relay you'll see it's labeled on the bottom and has a diagram on the side. 85 - ECM sends power to this terminal to energize the coil. 86 - Grounded to the frame. 30 - Fused, always hot (B+ - Battery Positive). 87 - Goes to the starter solenoid. Pull the relay, check terminals 30 and 86 for power and ground. Be careful when probing the relay terminals if you can't touch the relay terminal with your multimeter probe don't try to force it in. Use a small pin or attach a male terminal end that properly fits the terminal to a piece of wire. Start with terminal 30, if you don't have power (12+v) on terminal 30 or if you have less than battery voltage check the starter fuse in the underhood fuse block. Ground your multimeter to the B- (Ba