Mazda 2002 6 Workshop Manual page 686

ON-BOARD DIAGNOSTIC (DYNAMIC STABILITY CONTROL)
Diagnostic procedure
STEP
1 INSPECT COMBINE SENSOR POWER
SUPPLY CIRCUIT FOR OPEN CIRCUIT
• Turn ignition key to ON (engine OFF).
• Measure voltage between combine sensor
terminal C (harness side) of and ground.
• Is voltage 4.5—5.5 V?
2 INSPECT COMBINE SENSOR GROUND
CIRCUIT FOR OPEN CIRCUIT
• Turn ignition key to OFF.
• Disconnect DSC HU/CM and yaw rate
sensor connectors.
• Inspect continuity between DSC HU/CM
terminal Y (harness side) and combine
sensor terminal E (harness side).
• Is there continuity?
3 INSPECT YAW RATE SENSOR PART SIGNAL
CIRCUIT FOR OPEN CIRCUIT
• Inspect continuity between DSC HU/CM
terminal T (harness side) and combine
sensor terminal D (harness side).
• Is there continuity?
4 INSPECT LATERAL-G SENSOR PART
SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Inspect continuity between DSC HU/CM
terminal O (harness side) and combine
sensor terminal B (harness side).
• Is there continuity?
5 INSPECT YAW RATE SENSOR PART SIGNAL
CIRCUIT FOR SHORT TO GROUND
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM
terminal T (harness side) and ground.
• Is there continuity?
6 INSPECT LATERAL-G SENSOR PART
SIGNAL CIRCUIT FOR SHORT TO GROUND
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM
terminal O (harness side) and ground.
• Is there continuity?
7 INSPECT DIAGNOSIS SIGNAL CIRCUIT FOR
SHORT FOR OPEN
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM
terminal S (harness side) and combine
sensor terminal F.
• Is there continuity?
8 INSPECT DIAGNOSIS SIGNAL CIRCUIT FOR
SHORT TO GROUND
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM
terminal S (harness side) and combine
sensor terminal F.
• Is there continuity?
9 INSPECT COMBINE SENSOR
• Inspect combine sensor.
(See P–43 COMBINE SENSOR
INSPECTION)
• Is it okay?
10 VERIFY TROUBLESHOOTING COMPLETED
• Clear DTC from memory.
(See P–46 Clearing DTCs
• Is same DTC present?
11 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
P–90
INSPECTION
Procedures)
Yes Go to next step.
No Repair or replace harness for open circuit between yaw rate
sensor terminal C and ignition switch, then go to Step 8.
Yes Go to next step.
No Repair or replace harness for open circuit between DSC
HU/CM terminal Y and yaw rate sensor terminal E, then go
to Step 8.
Yes Go to next step.
No Repair or replace harness for open circuit between DSC
HU/CM terminal T and yaw rate sensor terminal D, then go
to Step 8.
Yes Go to next step.
No Repair or replace harness for open circuit between DSC
HU/CM terminal O and combine sensor terminal B, then go
to Step 8.
Yes Repair or replace harness for short to ground circuit
between DSC HU/CM terminal T and combine sensor
terminal D, then go to Step 8.
No Go to next step.
Yes Repair or replace harness for short to ground circuit
between DSC HU/CM terminal O and combine sensor
terminal B, then go to Step 8.
No Go to next step.
Yes Repair or replace harness for open circuit between DSC
HU/CM terminal S and combine sensor terminal F, then go
to Step 8.
No Go to next step.
Yes Repair or replace harness for short to ground circuit
between DSC HU/CM terminal S and combine sensor
terminal F, then go to Step 8.
No Go to next step.
Yes Go to next step.
No Replace yaw rate sensor, then go to next step.
Yes Replace DSC HU/CM, then go to next step.
No Go to next step.
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
ACTION