VIN Range: G00442->G45703

PINPOINT TEST G307559p8: C1285; ACTIVE BOOSTER SOLENOID CIRCUIT FAILURE

G307559t33: CHECK THE ACTIVE BOOSTER SOLENOID SUPPLY VOLTAGE
1. Disconnect the booster solenoid electrical connector, ECO3.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between ECO3, pin 04 (RW) and GROUND.

^ Is the voltage less than 10 volts?

-> Yes GO to Pinpoint Test G307559t34.

-> No GO to Pinpoint Test G307559t36.

G307559t34: CHECK THE ACTIVE BOOSTER SOLENOID SUPPLY CIRCUIT FOR HIGH RESISTANCE
1. Turn the ignition switch to the OFF position.
2. Disconnect the ABS/DSC module electrical connector EC30.
3. Measure the resistance between ECO3, pin 04 (RW) and EC30, pin 17 (RW).

^ Is the resistance greater than 5 ohms?

-> Yes REPAIR the high resistance circuit. For additional information, refer to Vehicle/Diagrams. CLEAR the DTC. TEST the system for normal operation.

-> No GO to Pinpoint Test G307559t35.

G307559t35: CHECK THE ACTIVE BOOSTER SOLENOID SUPPLY CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between ECO3 pin 04 (RW) and GROUND.

^ Is the resistance less than 10,000 ohms?

-> Yes REPAIR the short circuit. For additional information, refer to Vehicle/Diagrams. CLEAR the DTC. TEST the system for normal operation.

-> No Contact dealer technical support for advice on possible ABS/DSC module failure.

G307559t36: CHECK THE ACTIVE BOOSTER SOLENOID SIGNAL CIRCUIT FOR HIGH RESISTANCE
1. Disconnect the ABS/DSC module electrical connector EC30.
2. Measure the resistance between ECO3, pin 03 (BW) and EC30, pin 31 (BW).

^ Is the resistance greater than 5 ohms?

-> Yes REPAIR the high resistance circuit. For additional information, refer to Vehicle/Diagrams. CLEAR the DTC. TEST the system for normal operation.

-> No GO to Pinpoint Test G307559t37.

G307559t37: CHECK THE ACTIVE BOOSTER SOLENOID SIGNAL CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between ECO3, pin 03 (BW) and GROUND.

^ Is the resistance less than 10,000 ohms?

-> Yes REPAIR the short circuit. For additional information, refer to Vehicle/Diagrams. CLEAR the DTC. TEST the system for normal operation.

-> No Contact dealer technical support for advice on possible active booster failure. CLEAR the DTC. TEST the system for normal operation. If the DTC is repeated, contact dealer technical support for advice on possible ABS/DSC module failure.