Mazda Mazda6 Workshop Manual Supplement page 855

ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]
4WD
Module
TCM
—
—
PCM X
X
X
TCM
1. Access and monitor the "PCM_MSG", "ABS_MSG", "AWD_MSG" and "IC_MSG" of PID using the SST (WDS
or equivalent).
2. Referring to the PID/DATA MONITOR, confirm the display status of the PID. (See
TABLE.)
3. Referring to the following table, determine the malfunctioning part of the CAN system.
Module
PCM
—
—
X
TCM
X
X
X
X
ABS (ABS/TCS) HU/CM or DSC HU/CM
1. Access and monitor the "PCM_MSG", "TCM_MSG", "AWD_MSG" and "IC_MSG" of PID using the SST (WDS
or equivalent).
2. Referring to the PID/DATA MONITOR, confirm the display status of the PID. (See
TABLE.)
3. Referring to the following table, determine the malfunctioning part of the CAN system.
2WD
Module
• ABS (ABS/TCS) HU/CM
• DSC HU/CM
Communication status
ABS (ABS/TCS) HU/CM
DSC HU/CM
—
X
—
X
—
Communication status
ABS (ABS/TCS)
4WD control
HU/CM
module
DSC HU/CM
—
X
—
X
X
—
X
Communication status
PCM
—
—
X
Instrument cluster
• Wiring harness A
—
• PCM
• Wiring harness B
X
• TCM
• Wiring harness D
• ABS (ABS/TCS) HU/CM
X
• DSC HU/CM
• Wiring harness E
• Wiring harness G
—
• Instrument cluster
• Wiring harness C
—
T–41 PID/DATA MONITOR
Instrument cluster
— —
X X
X X
— X
X —
— —
— —
T–41 PID/DATA MONITOR
Instrument cluster
• Wiring harness B
• ABS (ABS/TCS) HU/CM
—
• DSC HU/CM
• Wiring harness A
X
• PCM
• Wiring harness C
—
• Instrument cluster
X: Normal
—: Communication error
Malfunction location
X: Normal
—: Communication error
Malfunction location
• Wiring harness B
• TCM
• Wiring harness A
• PCM
• Wiring harness D
• ABS (ABS/TCS)
HU/CM
• DSC HU/CM
• Wiring harness F
• 4WD control
module
• Wiring harness G
• Instrument cluster
• Wiring harness C
• Wiring harness E
X: Normal
—: Communication error
Malfunction location
T–43
T