Test Drive
WARNING: This page is about a different car, the 1996 Volvo 850. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Vehicle may be difficult to control if it has a brake problem. Ensure test drive is performed under safe and controlled conditions. Test drive should be performed after any brake repair.
- Disconnect scan tool. Turn ignition off. Start engine and note BRAKE warning light. If BRAKE light is on, check brake fluid level and system for leaks. Repair as necessary.
- Test drive vehicle at a speed of at least 30 MPH. If ABS warning light comes on or does not go out, stop vehicle and note any DTCs. Perform appropriate DTC diagnosis. If no DTCs are posted and ABS warning light comes on, see ABS WARNING LIGHT under TROUBLE SHOOTING.
- Perform several brake tests from a reasonable speed to a full stop on a level dry road. At least one stop should be with ABS activated at a speed over 30 MPH.
ABS/TRACS DTCs
| DTC | Probable Fault |
|---|---|
| DTC 141 | EBD/Pressure Sensor Signal; Circuit Fault |
| DTC 142 | Brake Light Switch Signal |
| DTC 143 | Road Speed Signal; Circuit Fault |
| DTC 144 | Front Brakes Overheating |
| DTC 211 | Left Front Wheel Sensor Signal; Wheel Speed Incorrect |
| DTC 212 | Right Front Wheel Sensor Signal; Wheel Speed Incorrect |
| DTC 213 | Left Rear Wheel Sensor Signal; Wheel Speed Incorrect |
| DTC 214 | Right Rear Wheel Sensor Signal; Wheel Speed Incorrect |
| DTC 221 | Left Front Wheel Sensor Signal; ABS Control Phase Too Long |
| DTC 222 | Right Front Wheel Sensor Signal; ABS Control Phase Too Long |
| DTC 223 | Left Rear Wheel Sensor Signal; ABS Control Phase Too Long |
| DTC 224 | Right Rear Wheel Sensor Signal; ABS Control Phase Too Long |
| DTC 311 | Left Front Wheel Sensor Signal; Circuit Fault |
| DTC 312 | Right Front Wheel Sensor Signal; Circuit Fault |
| DTC 313 | Left Rear Wheel Sensor Signal; Circuit Fault |
| DTC 314 | Right Rear Wheel Sensor Signal; Circuit Fault |
| DTC 321 | Left Front Wheel Extrapolation Counter; Wheel Sensor Signal |
| DTC 322 | Right Front Wheel Extrapolation Counter; Wheel Sensor Signal |
| DTC 323 | Left Rear Wheel Extrapolation Counter; Wheel Sensor Signal |
| DTC 324 | Right Rear Wheel Extrapolation Counter; Wheel Sensor Signal |
| DTC 411 | Left Front Wheel Inlet Valve; Fault In Valve Terminal Circuit |
| DTC 412 | Left Front Wheel Outlet Valve; Fault In Valve Terminal Circuit |
| DTC 413 | Right Front Wheel Inlet Valve; Fault In Valve Terminal Circuit |
| DTC 414 | Right Front Wheel Outlet Valve; Fault In Valve Terminal Circuit |
| DTC 421 | Rear Wheel Inlet Valve; Fault In Valve Terminal Circuit |
| DTC 422 | Rear Wheel Outlet Valve; Fault In Valve Terminal Circuit |
| DTC 423 | TRACS Inlet Valve; Fault In Valve Terminal Circuit |
| DTC 431 | Control Module; General Hardware Fault |
| DTC 432 | Control Module; General Interference Fault |
| DTC 433 | Battery Voltage Too High |
| DTC 441 | Main Control Module Relay |
| DTC 442 | Control Module; Creeping Powers |
| DTC 443 | Pump Motor; Electrical Or Mechanical Fault |
| DTC 444 | Control Module; Valve Reference Power |
| DTC 445 | Control Module; General Valve Fault |
NOTE:
Refer to illustration for ABS component location and connector and terminal identification. See Fig 1
.