Mazda 2002 6 Workshop Manual page 674

ON-BOARD DIAGNOSTIC (DYNAMIC STABILITY CONTROL)
Diagnostic procedure
STEP
1 VERIFY OTHER DTC HAS BEEN RECORDED
• If any of DTC C1186 and/or C1266 has also
been stored?
2 INSPECT ABS FUSE CONDITION
• Is ABS fuse (60 A) okay?
3 INSPECT MOTOR 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 D (harness side) of SST and
ground.
• Is voltage B+?
4 INSPECT PUMP MOTOR GROUND CIRCUIT
FOR OPEN CIRCUIT
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM
terminal B (harness side) of SST and
ground.
• Is there continuity?
P–78
INSPECTION
Yes Go to applicable DTC inspection.
No Go to next step.
Yes Go to next step.
No Replace fuse, then go to Step 6.
Yes Go to next step.
No Repair or replace harness for open circuit between battery
positive terminal and DSC HU/CM terminal D, then go to
Step 9.
Yes Go to next step.
No Repair or replace harness for open circuit between DSC
HU/CM terminal B and ground, then go to Step 6.
ACTION