On-Board Diagnostic - Mazda 6 2002 Workshop Manual

ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]
DTC TABLE
DTC Malfunction location
U0073 CAN system communication error
Communication error to ABS (ABS/TCS) HU/CM
U0121
or DSC HU/CM
U0155 Communication error to instrument cluster
U1900 CAN system communication error
CAN system wiring harness open and short
U2516
circuit
End Of Sie
PID/DATA MONITOR TABLE
PID name (definition)
IC_MSG
(Missing message from the
instrument cluster)
ABS_MSG
(Missing message from the
ABS (ABS/TCS) HU/CM or
DSC HU/CM)
PCM_MSG
(Missing message from the
PCM)
End Of Sie
PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION
System Wiring Diadram
T–142
Condition Specification
Circuit in the instrument cluster
Present
is normal.
Circuit in the instrument cluster
Not Present
is abnormal.
Circuit in the ABS (ABS/TCS)
Present HU/CM or DSC HU/CM is
normal.
Circuit in the ABS (ABS/TCS)
Not Present HU/CM or DSC HU/CM is
abnormal.
Present Circuit in the PCM is normal.
Not Present Circuit in the PCM is abnormal.
Related module
PCM
• ABS (ABS/TCS) HU/CM (with
ABS (ABS/TCS)
• DSC HU/CM (with DSC)
• Instrument cluster
Related module
ABS (ABS/TCS)
HU/CM or DSC HU/
CM
Instrument cluster
• ABS (ABS/TCS)
HU/CM or DSC
HU/CM
• Instrument
cluster
A6E816255430W02
Page
(See T–144 DTC U0073,
U1900, U2516)
—
(See T–144 DTC U0073,
U1900, U2516)
A6E816255430W03
Terminal
• ABS (ABS/TCS)
HU/CM: O, R
• DSC HU/CM: AF,
AG
• Instrument cluster:
2W, 2X
A6E816255430W04
A6E8162W002