Mazda 6 2002 Workshop Manual page 620

Diagnostic procedure
STEP
1 INSPECT ABS FUSE CONDITION
• Is ABS fuse (60 A) okay?
2 INSPECT FAIL-SAFE RELAY POWER
SUPPLY CIRCUIT FOR OPEN CIRCUIT
• Turn ignition key to OFF.
• Disconnect ABS (ABS/TCS) HU/CM
connector.
• Connect SST (adapter harness) to ABS (ABS/
TCS) HU/CM connector (harness side only).
• Turn ignition key to ON (engine OFF).
• Measure voltage between ABS (ABS/TCS)
HU/CM terminal AA (harness side) of SST
and ground.
• Is voltage B+?
3 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_VOLT using WDS or
equivalent.
• Does fail-safe relay operate?
4 VERIFY TROUBLESHOOTING COMPLETED
• Clear DTC from memory.
(See P–46 Clearing DTCs
• Is same DTC present?
5 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254
End Of Sie
C 1210
C 1214
C 1194
C 1198
DTC
C 1246
C 1254
C 1242
C 1250
DETECTION
• Solenoid monitor signal does not track in response to solenoid ON/OFF command.
CONDITION
POSSIBLE • Open, short to power, or short to ground circuit in ABS (ABS/TCS) HU/CM
CAUSE • Stuck solenoid valve in ABS (ABS/TCS) HU/CM
Diagnostic procedure
STEP
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?
2 VERIFY TROUBLESHOOTING COMPLETED
• Clear DTC from memory.
(See P–46 Clearing DTCs
• Start engine and drive vehicle at 10 km/h
{6.2 mph} or above.
• Gradually slow down and stop vehicle.
• Is same DTC present?
3 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
ON-BOARD DIAGNOSTIC (ABS/TCS)
INSPECTION
Procedures)
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
INSPECTION
Procedures)
Yes Go to net step.
No Replace fuse, then go to Step 4.
Yes Go to net step.
No Repair or replace harness for open circuit between battery
positive terminal and ABS (ABS/TCS) HU/CM terminal AA,
then go to Step 4.
Yes Go to net step.
No Replace ABS (ABS/TCS) HU/CM, then go to net step.
Yes Replace DSC HU/CM, then go to net step.
No Go to net step.
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
Yes Go to net step.
No Repair ABS (ABS/TCS) HU/CM, then go to net step.
Yes Replace ABS (ABS/TCS) HU/CM, then go to net step.
No Go to net step.
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
ACTION
A6E697567650W13
ACTION
P–63
P