Specifications

ON-BOARD DIAGNOSTIC (DYNAMIC STABILITY CONTROL)
P87
P
Diagnostic procedure
End Of Si e
DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958
A6E697367650W15
Diagnostic procedure
STEP INSPECTION ACTION
1 INSPECT ABS FUSE CONDITION
• Is ABS fuse (60 A) okay?
Yes Go to next step.
No Replace fuse, then go to Step 4.
2 INSPECT FAIL-SAFE RELAY POWER
SUPPLY CIRCUIT FOR OPEN CIRCUIT
• Turn ignition key to OFF.
• Disconnect DSC HU/CM connector.
• Connect SST (adapter harness) to DSC HU/
CM connector (harness side only).
• Turn ignition key to ON (engine OFF).
• Measure voltage between DSC HU/CM
terminal C (harness side) of SST and
ground.
• Is voltage B+?
Yes Go to next step.
No Repair or replace harness for open circuit between battery
positive terminal and DSC HU/CM terminal C, then go to
Step 4.
4 VERIFY FAIL-SAFE OPERATION
• Turn ignition key to OFF.
• Remove SST (adapter harness) and connect
all disconnected connectors.
• Connect WDS or equivalent to DLC-2.
• Turn ignition key to ON (engine OFF).
• Access ABS_POWER using WDS or
equivalent.
• Does fail-safe relay operate?
Yes Go to next step.
No Replace DSC HU/CM, then go to next step.
5 VERIFY TROUBLESHOOTING COMPLETED
• Clear DTC from memory.
See P46 Clearing DTCs Procedures
• Is same DTC present?
Yes Replace DSC HU/CM, then go to next step.
No Go to next step.
6 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
DTC
C 1210
C 1214
C 1194
C 1198
C 1246
C 1254
C 1242
C 1250
C 1400
C 1410
C 1957
C 1958
RF pressure reduction solenoid valve
RF pressure retention solenoid valve
LF pressure reduction solenoid valve
LF pressure retention solenoid valve
RR pressure reduction solenoid valve
RR pressure retention solenoid valve
LR pressure reduction solenoid valve
LR pressure reduction solenoid valve
RF traction switch solenoid valve
LF traction switch solenoid valve
RF DSC switch solenoid valve
LF DSC switch solenoid valve
DETECTION
CONDITION
• Solenoid monitor signal does not track in response to solenoid ON/OFF command.
POSSIBLE
CAUSE
• Stuck solenoid valve in DSC HU/CM
STEP INSPECTION ACTION
1 VERIFY SOLENOID VALVE OPERATION
• Turn ignition key to OFF.
• Remove SST (adapter harness) and connect
all disconnected connectors.
• Connect WDS or equivalent to DLC-2.
• Turn ignition key to ON (engine OFF).
• Access solenoid valve(s) PIDs using WDS or
equivalent.
• Does solenoid valve operate?
Yes Go to next step.
No Repair DSC HU/CM, then go to next step.