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display does not match the state of the pedal, 6. If no other problems are found, it will be neces- sary to road test the vehicle. THE DRBIII t MUST NOT BE CONNECTED TO THE 7. The following conditions should be considered ‘‘NORMAL’’ operation, and no repairs should be – Brake pedal feedback during an ABS stop (clicking, vibrating) – Clicking, groaning or buzzing at 12 Km/h (8 mph) (drive off self test) – Groaning noise during an ABS stop – Slight brake pedal drop and pop noise when ignition is initially turned on – Brake pedal ratcheting down at the end of an ABS stop 8. If the complaint is ABS ‘‘cycling’’ at the end of a stop at low speeds, it may be caused by a 9. After a road test in which no problems were found, refer to any Technical Service Bulletins 5.0 REQUIRED TOOLS AND DRBIII t (diagnostic read-out box) jumper wires 6.0 GLOSSARY OF TERMS ABS antilock brake system AC alternating current BCM body control module BS brake switch BLS brake lamp switch CAB controller antilock brake DC direct current DLC data link connector DRBIII t diagnostic read-out box DTC diagnostic test code EBD electronic brake distribution ECM electronic control module HCU hydraulic control unit HZ Hertz IC instrument cluster LF left front LR left rear PM pump motor RF right front RR right rear SOL solenoid TCS traction control system TCSS traction control system switch VSS vehicle speed signal WSS wheel speed sensor 7 GENERAL INFORMATION |