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BRAKE LAMP SWITCH CIRCUIT (CONTINUED) 19. CHECK THE BRAKE LAMP RELAY OUTPUT CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Measure the resistance between ground and the Brake Lamp Relay Is the resistance above 100 kohms? Yes >> Go to 20 No >> Repair the Brake Lamp Relay Output circuit for a short to ground. Perform ABS VERIFICATION TEST. 20. CHECK THE BRAKE LAMP RELAY OUTPUT CIRCUIT FOR AN OPEN With the ignition off. Measure the resistance of the Brake Lamp Relay Output circuit from Is the resistance below 5.0 ohms? Yes >> Replace the Brake Lamp Relay. Perform ABS VERIFICATION TEST. No >> Repair the Brake Lamp Relay Output circuit for an open. Perform ABS VERIFICATION TEST. ZH BRAKES - ABS ELECTRICAL DIAGNOSTICS 5 - 233 |