buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Component Diagnostic Charts (C-Charts) - Port Fuel Injection|Page 3025 > < Component Diagnostic Charts (C-Charts) - Port Fuel Injection|Page 3023
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called "Quad-Driver". Failure of one can damage any other driver within the set.

Solenoid coil resistance must measure more than 20 ohms. Less resistance will cause early failure of the ECM "Driver". Using an ohmmeter, check
the solenoid coil resistance of the following before installing a replacement ECM.

a. TCC

Component Diagnostic Charts (C-Charts) - Port Fuel Injection|Page 3025 > < Component Diagnostic Charts (C-Charts) - Port Fuel Injection|Page 3023