Mazda 6 2002 - Page 997

ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]
T145
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6 INSPECT WIRING HARNESS BETWEEN DSC
HU/CM AND INSTRUMENT CLUSTER
• Disconnect DSC HU/CM connector.
• Inspect following wiring harness between
DSC HU/CM and instrument cluster
terminals for short to ground, short power
supply, and open circuit:
 AF2W (CAN_L)
 AG2X (CAN_H)
• Is wiring harness okay?
Yes Replace instrument cluster, then go to Step 16.
No Replace wiring harness.
7 INSPECT WIRING HARNESS BETWEEN ABS
(ABS/TCS) HU/CM AND INSTRUMENT
CLUSTER
• Disconnect ABS (ABS/TCS) HU/CM
connector.
• Inspect following wiring harness between
ABS (ABS/TCS) HU/CM and instrument
cluster terminals for short to ground, short
power supply, and open circuit:
R2W (CAN_L)
 O2X (CAN_H)
• Is wiring harness okay?
Yes Replace instrument cluster, then go to Step 16.
No Replace wiring harness.
8 INSPECT ABS (ABS/TCS) HU/CM OR DSC
HU/CM CONNECTOR
• Disconnect negative battery cable.
• Disconnect ABS (ABS/TCS) HU/CM or DSC
HU/CM connector.
• Is poor connection detection bars of ABS
(ABS/TCS) HU/CM or DSC HU/CM
connector okay?
Yes Go to next step.
No Replace wiring harness.
9 • Is vehicle equipped with DSC? Yes Go to next step.
No Go to Step 11.
10 INSPECT WIRING HARNESS BETWEEN DSC
HU/CM AND INSTRUMENT CLUSTER
• Disconnect instrument cluster connector.
• Inspect following wiring harness between
DSC HU/CM and instrument cluster
terminals for short to ground, short power
supply, and open circuit:
 AF2W (CAN_L)
 AG2X (CAN_H)
• Is wiring harness okay?
Yes Replace DSC HU/CM , then go to Step 16.
No Replace wiring harness.
11 INSPECT WIRING HARNESS BETWEEN ABS
(ABS/TCS) HU/CM AND INSTRUMENT
CLUSTER
• Disconnect instrument cluster connector.
• Inspect following wiring harness between
ABS (ABS/TCS) HU/CM and instrument
cluster terminals for short to ground, short
power supply, and open circuit:
R2W (CAN_L)
 O2X (CAN_H)
• Is wiring harness okay?
Yes Replace ABS (ABS/TCS) HU/CM , then go to Step 16.
No Replace wiring harness.
12 INSPECT PCM CONNECTOR
• Disconnect negative battery cable.
• Disconnect PCM connector.
• Is poor connection detection bars of PCM
connector okay?
Yes Go to next step.
No Replace wiring harness.
13 • Is vehicle equipped with DSC? Yes Go to next step.
No Go to Step 15.
STEP INSPECTION ACTION