TCS/ABS 5.3

C2415 Solenoid Valves Rear Left. Incorrect,
C2450 Solenoid Valves Front Left. Incorrect,
C2455 Solenoid Valves Front Right. Incorrect,
C2485 Solenoid Valves Rear Right. Incorrect,
C0141 Pressure Increase Valve Left. Incorrect,
C0146 Pressure Relief Valve Left. Incorrect,
C0151 Pressure Increase Valve Right. Incorrect,
C0156 Pressure Relief Valve Right. Incorrect.

Fault symptoms
ABS, brakes and central warning lamps are on.
TCS OFF indicator lamp is on.
No ABS or TCS function.

Conditions
The valves are monitored continuously for circuit continuity and short-circuiting.
The valve test is conducted with ignition ON and wheel speed above 6 km/h (3.7 mph).

Diagnostic help
The solenoid valves can be activated using the diagnostic tool.
- Select "Activate"
- Select: "Valves"
The respective valve can then be selected in the sub-menu. The selected valve is activated for about 30 seconds at a frequency of 1 Hz.
Change the control module, refer to General Fault Diagnosis, Before Changing A Control Module.

Diagnostic procedure
Internal Control Module Fault
Change complete hydraulic unit.