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BRAKE LAMP SWITCH CIRCUIT (CONTINUED) 11. MEASURE BRAKE LAMP RELAY CONTROL CIRCUIT VOLTAGE Turn the ignition off. Remove the Brake Lamp Relay. Turn the ignition on. Measure the voltage of the Brake Lamp Relay Control circuit at CAB Is the voltage below 1.0 volt? Yes >> Go to 12 No >> Repair the Brake Lamp Relay Control circuit for a short to voltage. Perform ABS VERIFICATION TEST. 12. MEASURE BRAKE LAMP RELAY OUTPUT CIRCUIT VOLTAGE WITH BRAKE PEDAL PRESSED With the ignition on. Measure the voltage of the Brake Lamp Relay Output circuit at CAB Is the voltage above 10 volts? Yes >> Go to 13 No >> Go to 18 ZH BRAKES - ABS ELECTRICAL DIAGNOSTICS 5 - 229 |