Mazda 6 2002 Workshop Manual page 630

ON-BOARD DIAGNOSTIC (DYNAMIC STABILITY CONTROL)
Diagnostic procedure
STEP
1 INSPECT BATTERY VOLTAGE
• Is battery terminal voltage okay?
2 INSPECT BATTERY GRAVITY
• Is battery specific gravity as specified?
3 INSPECT CHARGING SYSTEM
• Are generator and drive belt tension okay?
4 INSPECT DSC HU/CM POWER SUPPLY
CIRCUIT FOR OPEN CIRCUIT
• Start engine.
• Measure voltage between DSC HU/CM
terminal G and ground.
• Is voltage above 10 V?
5 INSPECT DSC HU/CM GROUND CIRCUIT
FOR POOR GROUND OR OPEN CIRCUIT
• Turn ignition key to OFF.
• Measure resistance between ground and
DSC HU/CM terminal A.
• Is resistance within 0—1 ohm?
6 VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from memory.
(See P–46 Clearing DTCs
• Is same DTC present?
7 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
INSPECTION
Procedures)
Yes Make sure that battery terminal connection is okay.
Go to net step.
No Charge or replace battery, then go to Step 6.
Yes Go to net step.
No Replace battery, then go to Step 6.
Yes Go to net step.
No Adjust drive belt tension as necessary.
Replace generator and/or drive belt as necessary.
Yes Go to net step.
No Go to Step 6.
Yes Go to net step.
No If there is no continuity:
• Repair or replace harness for open circuit between DSC
HU/CM and ground, then go to net step.
If resistance is not within 0—1 ohm:
• Repair or replace harness for poor ground, 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.
ACTION
P–73
P