T–44
ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]
4WD
X: Normal
—: Communication error
4WD control module
1. Check the display of DTC U0100, U0101 and/or U0121, using the SST (WDS or equivalent). (See T–41 DTC
TABLE.)
2. Referring to the following table, determine the malfunctioning part of the CAN system.
X: Normal
—: Communication error
Instrument Cluster
1. Access and monitor the “PCM_MSG”, “ABS_MSG”, “AWD_MSG” and “TCM_MSG” of PID using the SST
(WDS or equivalent).
2. Referring to the PID/DATA MONITOR, confirm the display status of the PID. (See T–41 PID/DATA MONITOR
TABLE.)
3. Referring to the following table, determine the malfunctioning part of the CAN system.
Module
Communication status
Malfunction location
PCM TCM
4WD control
module
Instrument cluster
• ABS
(ABS/
TCS) HU/
CM
• DSC HU/
CM
————
• Wiring harness D
• ABS (ABS/TCS)
HU/CM
• DSC HU/CM
— XXX
• Wiring harness A
• PCM
X — XX
• Wiring harness B
• TCM
XX— X
• Wiring harness F
• 4WD control
module
XXX—
• Wiring harness G
• Instrument cluster
—— XX• Wiring harness C
XX——• Wiring harness E
Module
Communication status
Malfunction location
PCM TCM
ABS (ABS/TCS) HU/CM
DSC HU/CM
4WD
control
module
———
• Wiring harness E
• Wiring harness F
• 4WD control module
— XX
• Wiring harness A
• PCM
X — X
• Wiring harness B
• TCM
XX—
• Wiring harness D
• ABS (ABS/TCS) HU/CM
• DSC HU/CM
—— X • Wiring harness C
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