Diagnostic Trouble Code (DTC) Information

DTC information

Condition





The control module determines whether the pump is working by checking to see if the pump is working without being activated, if there is a voltage supply to the pump motor when activated or if the signal which is generated in the pump motor circuit from the pump motor voltage supply is broken (generated voltage).
The control module also checks continuously for breaks in the circuit. The control module checks the pump motor by activating it the first time the car reaches 20 km/h (25 mph) if the brake light switch has been activated during the same period when the ignition is switched on, or under normal ABS/TRACS control. If the control module registers that the pump does not start, runs continuously, or there is a break in the circuit, DTC ABS-443 is posted.

Substitute value

- ABS/TRACS cuts out.
- EBD system is available.

Possible source

- Fuse 9 defective.
- Break in voltage supply (30-supply) to control module #25 for the pump motor.
- Break in voltage supply to the pump motor.
- Break in the pump motor ground lead.
- Defective pump motor.
- Contact resistance in the connections.

Fault symptom[s]

- If the ABS function cuts out, there is a risk of the wheels locking when braking.
- In cars with TRACS, the anti-wheel-slip system cuts out.