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
NOTE:
- Example: Circuit between ECM and the combination meter is judged normal if the customer indicates tachometer functions normally.
Indication of the combination meter is important to detect the root cause because it is the most obvious to the customer, and it performs CAN communication with many units.
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.
Removal and installation
EXHAUST SYSTEM
Exploded View
Front exhaust tube
Ring gasket
Front exhaust tube stay
Front exhaust tube bracket
Gasket
Center exhaust tube rubber hanger
Center exhaust tube
Center exhaust tube hanger
Rear muffler bracket (RH)
Rear muffler (RH)
Rear muffler bracket (LH) ...
IPDM-E 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 IPDM E/R for damage,
bend and loose connection (unit side
and connector side).
2.CHECK HARNESS FOR OPEN CIRCUIT
...
Front door speaker
Description
The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker
amp. amplifies the audio signals before sending them to the front door
speakers using the audio signal circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the audio unit, BOSE speaker amp. and speaker ...