Mazda 2: Foreword [Multiplex Communication System]
- If the CAN system is considered to be the cause of the malfunction based
on the repair order form and
the malfunctioning symptom, follow the Troubleshooting Procedure.
- DTCs are also output due to a control module or sensor malfunction, or
incorrect power supply. Verify
the output DTCs and first inspect the DTCs not shown in DTC TABLE [MULTIPLEX
COMMUNICATION
SYSTEM].
- If there is an open circuit in the communication lines, it is possible
that signal error DTCs may be
output in addition to communication error DTCs. Perform DETERMINING
MALFUNCTIONING PART (HS-CAN)
[MULTIPLEX COMMUNICATION SYSTEM] if the communication error and signal error
DTCs are
output simultaneously.
Troubleshooting Procedure

*1 DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]
*2 DTC U0001:88, U0073:00 [MULTIPLEX COMMUNICATION SYSTEM]
*3 DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM]
*4 M-MDS AND VEHICLE NOT COMMUNICATING [MULTIPLEX COMMUNICATION SYSTEM]
DTC Table [Multiplex Communication System]
HS-CAN



*1 If only the target DTCs are displayed, perform the corresponding DTC
inspection without
determining the open circuit location.
READ NEXT:
CAUTION:
If the malfunctioning part is detected in the communication line, before
disconnecting the related connector for inspection,
press the connector in the connection direction to verify tha
CAUTION:
Perform the following on-board diagnosis according to FOREWORD
[MULTIPLEX COMMUNICATION SYSTEM] troubleshooting
procedure.
Detection Condition
Possible causes of communication errors
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
SEE MORE:
ENGINE REMOVAL/INSTALLATION
WARNING:
Fuel vapor is hazardous. It can very easily ignite, causing serious
injury and damage. Always keep sparks and flames away
from fuel.
Fuel line spills and leakage are dangerous. Fuel can ignite and cause
serious injuries or death and damage. Fuel can also
NOTE:
If the self-test is implemented, the seat weight sensor calibration is
performed. Perform
the DTC inspection in accordance with the following conditions:
Do not place objects on the front seat (passenger side)
Do not touch the front seat (passenger side)
Fix the slide position of th
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