Mazda 6 2002 - Page 998

T146
ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]
End Of Sie
14 INSPECT WIRING HARNESS BETWEEN PCM
AND DSC HU/CM
• Disconnect negative battery cable.
• Disconnect DSC HU/CM connector.
• Inspect following wiring harness between
PCM and DSC HU/CM terminals for short to
ground, short power supply, and open circuit:
 2RAF (CAN_L)
 2UAG (CAN_H)
• Is wiring harness okay?
Yes Replace PCM, then go to Step 16.
No Replace wiring harness.
15 INSPECT WIRING HARNESS BETWEEN PCM
AND ABS (ABS/TCS) HU/CM
• Disconnect negative battery cable.
• Disconnect ABS (ABS/TCS) HU/CM
connector.
• Inspect following wiring harness between
PCM and ABS (ABS/TCS) HU/CM terminals
for short to ground, short power supply, and
open circuit:
 2RR (CAN_L)
2UO (CAN_H)
• Is wiring harness okay?
Yes Replace PCM, then go to next step.
No Replace wiring harness.
16 CHECK DTC INDICATE
• Connect PCM connector.
• Connect ABS (ABS/TCS) HU/CM or DSC
HU/CM connector.
• Connect instrument cluster connector.
• Clear DTC from module memory using SST
(WDS or equivalent).
• Perform KOEO/KOER self-test.
• Are DTCs U0073, U1900 and/or U2516
indicated?
Yes Repeat from Step 1.
No Troubleshooting completed.
STEP INSPECTION ACTION