Mazda 2: M-MDS and Vehicle Not Communicating [Multiplex Communication System]
Mazda 2 2007-2014 Service Manual / Body and Accessories / M-MDS and Vehicle Not Communicating [Multiplex Communication System]
CAUTION:
- Perform the following on-board diagnosis according to FOREWORD [MULTIPLEX COMMUNICATION SYSTEM] troubleshooting procedure.
Detection Condition
- Possible causes of communication errors between the M-MDS and vehicle include communication circuit interruption due to an open circuit in the CAN communication wiring harness, or poor contact of connector terminals, or a BUS OFF condition due to a short circuit in the CAN communication wiring harness.
Possible Causes
- Open circuit in wiring harness between PCM and DLC-2
- Open circuit in BCM CAN line
- Improper insertion, connector terminal damage, deformation, corrosion, or disconnection of PCM, BCM, or connector C-03
- Short circuit in wiring harness between CAN system-related module CAN_L and CAN_H lines
- Short circuit to power supply in wiring harness between CAN system-related module
- Short circuit to ground in wiring harness between CAN system-related module
- Short circuit to power supply in CAN system-related module internal CAN lines
- Short circuit to ground in CAN system-related module internal CAN lines
- Damage, deformation, corrosion, or disconnection of DLC-2
- PCM power supply is not normal
- PCM ground is not normal
- PCM internal resistance is not normal
- CAN system-related module malfunction
Wiring Diagram
Diagnostic Procedure
CAUTION:
- When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.
DTC U0001:88, U0073:00
Diagnostic procedure
CAUTION:
- When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.
READ NEXT:
ON-Board Diagnostic Wiring Diagram [Instrument Cluster]
DTC INSPECTION [Instrument Cluster]
1. Connect the M-MDS (IDS) to the DLC-2.
2. After the vehicle is identified, select the following items from the
initialization screen of
the IDS.
Select "S
DTC Table [Instrument Cluster]
*1 Vehicles with tire pressure monitoring system
*2 ATX
DTC B1A84:41/U0300:00
Diagnostic Procedure
DTC B1A84:51/U2100:00
Diagnostic Procedure
DTC P0070:14
System Wiring Diagram
Diagnostic P
ON-Board Diagnostic Wiring Diagram [BCM]
DTC INSPECTION [BCM]
1. Connect the M-MDS (IDS) to the DLC-2.
2. Verify the following vehicle conditions:
Switch the ignition to ON.
All the switches are turned off (except the ignition switch)
SEE MORE:
Engine Oil
NOTE
Changing the engine oil should be done by an expert repairer, we recommend
an
Authorised Mazda Repairer.
Recommended Oil
In order to keep the maintenance interval (page 6-3 ) and to protect the
engine from damage
caused by poor lubrication, it is vitally important to make use of engine
Child-Restraint System Installation
Categories of Child-Restraint Systems
NOTE
When purchasing, ask the manufacturer of the child-restraint system which
type of childrestraint
system is appropriate for your child and vehicle.
(Europe)
Child-restraint systems are classifi ed into the following 5 groups according
to the UNECE
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