Dtc B2477 - Mazda 6 2002 Workshop Manual

ON-BOARD DIAGNOSTIC (DYNAMIC STABILITY CONTROL)
Diagnostic procedure
STEP
1 CHECK TR SWITCH FOR DTCs (ATX)
• Turn ignition key to OFF.
• Connect WDS or equivalent to DLC-2.
• Turn ignition key to ON (engine OFF).
• Is DTC for TR switch obtained?
2 INSPECT BACK-UP LIGHT SWITCH (MTX)
• Inspect back-up light switch.
• Is it okay?
3 INSPECT REVERSE SIGNAL CIRCUIT FOR
SHORT TO POWER (MTX)
• Shift select lever to neutral position.
• Turn ignition key to ON.
• Measure voltage between DSC HU/CM
terminal Z and ground.
• Is voltage above 10 V?
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 B2477

End Of Sie
DTC B2477
DETECTION
• Configuration write failure is detected.
CONDITION
POSSIBLE
• Module configuration procedure is not done properly.
CAUSE
Diagnostic procedure
STEP
1 CHECK WHETHER DSC HU/CM IS
CONFIGURED
• Is DSC HU/CM configured?
2 VERIFY TROUBLESHOOTING COMPLETED
• Clear DTC from memory.
(See P–46 Clearing DTCs
• Is same DTC present?
3 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
DTC C1095, C1096
End Of Sie
Caution
• • • • When attaching the tester lead to the DSC HU/CM connector the SST (49 G066 004) must be used.
DTC C1095, C1096
• C1095 (54):
— No motor monitor signal congruency is detected in relation to DSC HU/CM ON signal.
DETECTION • C1096 (53):
CONDITION — No motor monitor signal congruency is detected in relation to DSC HU/CM OFF signal.
— Motor monitor ON signal is not input after specified time when the motor signal is switched from ON
to OFF by DSC HU/CM.
• Malfunction of fuse (ABS 60 A)
• Open circuit in harness between DSC HU/CM terminal D and battery positive terminal
POSSIBLE
• Open circuit in harness between DSC HU/CM terminal B and body ground
CAUSE
• Open or short of motor relay and/or pump motor in DSC HU/CM
• Stuck motor relay and/or pump motor in DSC HU/CM
INSPECTION
Procedures)
Module configuration
INSPECTION
Procedures)
Motor relay, pump motor
Yes Follow inspection procedures for TR switch.
No Go to step 4.
Yes Go to net step.
No Replace back-up light switch, then go to net step.
Yes Go to net step.
No Replace back-up light switch, then go to net step.
Replace reverse signal circuit, 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 Configurate DSC using WDS or equivalent.
(See P–29 ABS (ABS/TCS) or DSC HU/CM
CONFIGURATION)
Yes Replace DSC HU/CM, then go to net step.
No Go to net step.
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
ACTION
A6E697367650W07
ACTION
A6E697367650W08
P–77
P