Diagnosis and repair workflow
Trouble diagnosis flow chart
Trouble diagnosis procedure
Interview with customer
Interview with the customer is important to detect the root cause of can communication system errors and to understand vehicle condition and symptoms for proper trouble diagnosis.
Points in interview
Notes for checking error symptoms:
Example: Circuit between ECM and the combination meter is judged normal if the customer indicates tachometer functions normally.
Inspection of vehicle condition
Check whether the symptom is reproduced or not.
Note:
Do not turn the ignition switch off or disconnect the battery cable while reproducing the error. The error may temporarily correct itself, making it difficult to determine the root cause.
Check of can system type (how to use can system type specification chart)
Determine can system type based on vehicle equipment.
Note:
CAN System Type Specification Chart (Style A)
Note:
Can system type is easily checked with the vehicle equipment identification information shown in the chart.
Can system type specification chart (style b)
Note:
Can system type is easily checked with the vehicle equipment identification information shown in the chart.
Create interview sheet
Fill out the symptom described by the customer, vehicle condition, and can system type on the interview sheet.
Interview sheet (example)
Detect the root cause
Can diagnosis function of consult detects the root cause.
Dtc/circuit diagnosis
U1000 can comm circuit
Description
Refer to LAN-7, "CAN COMMUNICATION SYSTEM : System Description".
Dtc logic
DTC DETECTION LOGIC
CONSULT Display
DTC Detection Condition
Possible Cause
CAN COMM CIRCUIT
[U1000]
When IPDM E/R cannot communicate with CAN com ...
Dlc branch line circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the data link connector for
damage, bend and loose connection
(connector side and harness side).
Is the inspection resul ...
Storage pouch
A storage pouch is located on the front of the
driver’s and passenger’s seats.
WARNING
Do not store angular, sharp, heavy objects
or objects that cannot fully fit inside
the pouch because they might increase
the likelihood of an injury in a
crash.
To ensure ...