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.
Normal operating condition
Description
FRONT WIPER MOTOR PROTECTION FUNCTION
IPDM E/R may stop the front wiper to protect the front wiper motor
if any obstruction (operation resistance)such as a large amount of snow
is detected during the front wiper operation.
At that time turn OFF the front wiper and remove the ...
Navigation Swipe to Meter
Turn-by-turn route guidance can also be viewed
in the vehicle information display by using Navigation
Swipe to Meter. This can be done by
programming a route, touching the turn-by-turn
route icon on the center display, and swiping
towards the general direction of the vehicle information
di ...
System description
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
The engine start function of Intelligent Key system is a system
that makes it possible to start and stop the
engine without removing the key. It verifies the ...