AP2: Check Light Switch Rheostat Resistor Ground
With the ignition key in the OFF position, disconnect the light switch rheostat resistor connector. Measure the resistance of the Black wire terminal No. 10 between the light switch rheostat resistor connector and ground. Is the resistance less than 5 ohms? If yes, go to step AP5: CHECK POWER SUPPLY TO TIMER MODULE . If no, go to the next step.