Mazda CX-7 2007 Workshop Manual page 1350

ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]
AWD Control Module
1. Inspect the display of DTC U0100, U0101, U0121 and/or U0155 using the M-MDS. (See 09-02D-7 DTC
TABLE[MULTIPLEX COMMUNICATION SYSTEM].)
2. Referring to the following table, determine the malfunctioning part of the CAN system.
Module
PCM
—
—
×
—
×
AWD Control
Module
—
×
BCM
Note
• There is no DTC in the BCM that determines signal quality between it and the other module. Due to this,
determine the malfunction location using the DTC on the other module side.
1. Referring to the following table, determine the malfunctioning part of the CAN system.
Module
DSC HU/CM
—
—
BCM
×
×
×
09-02D–10
2007 Mazda CX-7 Workshop Manual (1871–1U–06B)
Communication status
TCM DSC HU/CM
—
×
—
—
×
—
×
Communication status
Keyless control
module
—
×
—
—
×
Instrument
cluster
— —
× ×
× ×
× ×
×
—
×
—
×
—
Instrument cluster
—
×
×
—
—
×: Normal
— : Communication error
Malfunction location
• Wiring harness G
• AWD Control Module
• Wiring harness A
• PCM
• Wiring harness B
• TCM
• Wiring harness C
• Wiring harness D
• DSC HU/CM
• Wiring harness E
• BCM
• Wiring harness F
• Wiring harness H
• Wiring harness J
• BCM
• Wiring harness K
• Wiring harness M
• Instrument cluster
×: Normal
— : Communication error
Malfunction location
• BCM
• Wiring harness D
• Wiring harness E
• BCM
• Wiring harness F
• Wiring harness H
• Wiring harness J
• DSC HU/CM
• Wiring harness L
• Keyless control module
• Wiring harness K
• Wiring harness M
• Instrument cluster