T–40
ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]
Flowchart
• Use the following flowchart to verify the cause of the trouble.
End Of Sie
Repair the malfunctioning part by
following the DTC inspection.
A
Inspect the power supply and the ground circuits for any units
that do not respond.
Are they normal?
Repair the malfunctioning part.
A
A
B
START
Using the SST (WDS or equivalent), verify if DTCs are displayed for PCM, TCM, ABS (ABS/TCS) HU/CM (with ABS (ABS/TCS)),
DSC HU/CM (with DSC), 4WD control module and instrument cluster.
Are any DTCs displayed?
Ye s
Are any DTCs other than the following displayed?
PCM: U0073, U0101, U0121, U0155
TCM: U0073, U0100
ABS (ABS/TCS) HU/CM, DSC HU/CM,
Instrument cluster: U1900, U2516
4WD control module: U0100, U0101, U0121
No
END
No
No
Ye s
Are any of the following DTCs displayed?
PCM: U0073, U0101, U0121, U0155
TCM: U0073, U0100
ABS (ABS/TCS) HU/CM, DSC HU/CM,
Instrument cluster: U1900, U2516
4WD control module: U0100, U0101, U0121
Ye s
Ye s
Narrow down CAN system malfunction location.
Using the SST (WDS or equivalent), verify if DTCs are displayed
for PCM, TCM, ABS (ABS/TCS) HU/CM, DSC HU/CM, 4WD
control module and instrument cluster.
Are any DTCs displayed?
No
Using the SST (WDS or equivalent), clear DTCs stored in
each module.
END
Ye s
No
Turn the ignition switch to the LOCK position.
Inspect the wiring harness and connector between
any unit that does not respond and the DLC-2.
PCM
—DLC-2 (except MZR-CD (RF Turbo))
2R
—CAN_L
2U
—CAN_H
PCM
—DLC-2 (MZR-CD (RF Turbo))
39
—CAN_L
13
—CAN_H
TCM
—DLC-2
2J
—CAN_L
2M
—CAN_H
ABS (ABS/TCS) HU/CM
—DLC-2
X
—KLN
DSC HU/CM
—DLC-2
AB
—KLN
4WD control module
—DLC-2
H
—CAN_L
G
—CAN_H
Instrument cluster
—DLC-2
2W
—CAN_L
2X
—CAN_H
Are the wiring harnesses and connectors normal?
Is there a response from the PCM, TCM, ABS (ABS/TCS) HU/CM,
DSC HU/CM, 4WD control module and/or instrument cluster?
No
Ye s
No
Ye s
Repair the malfunctioning part by following the DTC inspection.
Repair the malfunctioning part.
A6E8162L101
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