MULTIPLEX COMMUNICATION SYSTEM
id0902e6830400
Outline
Flowchart
STEP |
INSPECTION |
ACTION |
|
---|---|---|---|
1
|
INSPECT DTC INDICATION
• Using the WDS or equivalent, inspect if DTCs are displayed for the following module:
• Are any DTCs displayed?
|
Yes
|
Go to the next step.
|
No
|
Go to Step 5.
|
||
2
|
INSPECT CAN SYSTEM-RELATED DTC
• Are any DTCs other than the following displayed?
|
Yes
|
Repair the malfunctioning part by following the related DTC inspection.
Go to the next step.
|
No
|
Go to the next step.
|
||
3
|
INSPECT CAN SYSTEM-RELATED DTC
• Are any of the following DTCs displayed?
|
Yes
|
Repair the malfunctioning part by following the DTC inspection.
Go to the next step.
|
No
|
Troubleshooting completed.
|
||
4
|
VERIFY TROUBLESHOOTING COMPLETED
• Clear the DTC from the CAN system-related modules using the WDS or equivalent.
• Start the engine.
• Are any of the CAN related DTCs displayed?
|
Yes
|
Go back to Step 3.
|
No
|
Troubleshooting completed.
|
||
5
|
INSPECT COMMUNICATION CONDITION
• Is there a response from the following modules?
|
Yes
|
Troubleshooting completed.
|
No
|
Go to the next step.
|
||
6
|
INSPECT MODULES THAT DO NOT RESPOND
• Inspect the power supply and the ground circuit for any units that do not respond.
• Are they normal?
|
Yes
|
Go to the next step.
|
No
|
Repair the malfunctioning part, then go back to Step 1.
|
||
7
|
INSPECT CONNECTOR AND WIRING HARNESS BETWEEN MODULES THAT DO NOT RESPOND AND DLC-2
• Turn the ignition switch to the LOCK position.
• Inspect the wiring harness and connector between any module that does not respond and the DLC-2.
PCM—DLC-2
EPS control module—DLC-2
ABS HU/CM—DLC-2
Instrument cluster—DLC-2
• Is there any malfunction?
|
Yes
|
Repair the malfunctioning part, then go back to Step 1.
|
No
|
Go to the next step.
|
||
8
|
INSPECT WIRING HARNESS
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between the following terminals.
• Is the voltage 2.0—3.0 V?
|
Yes
|
Go to the next step.
|
No
|
Go to Step 12.
|
||
9
|
INSPECT WIRING HARNESS
• Turn the ignition switch to the LOCK position.
• Measure the resistance between the following terminals.
• Is the resistance 59—65 ohms?
|
Yes
|
Replace the modules that do not respond, then go back to Step 1.
|
No
|
Go to the next step.
|
||
10
|
INSPECT PCM
• Disconnect the PCM connector.
• Measure the resistance between following terminals.
• Is the resistance 118—130 ohms?
|
Yes
|
Go to the next step.
|
No
|
Replace the PCM, then go to the next step.
|
||
11
|
INSPECT INSTRUMENT CLUSTER
• Disconnect the instrument cluster connector.
• Measure the resistance between the following terminals.
• Is the resistance 118—130 ohms?
|
Yes
|
Go to next step.
|
No
|
Replace the instrument cluster, then go to the next step.
|
||
12
|
CLASSIFY WIRING HARNESS MALFUNCTION OR MODULE MALFUNCTION
• Turn the ignition switch to the LOCK position.
• Disconnect the connector of any unit that does not respond. (If there are two or more units that do not respond, disconnect only one of the units.)
• Turn the ignition switch to the ON position.
• Measure the voltage between the following terminals.
• Is voltage 2.0—3.0 V?
|
Yes
|
Go to the next step.
|
No
|
Retry this step with other module connector disconnected.
If all units that do not respond are disconnected, go to Step 14.
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||
13
|
INSPECT WIRING HARNESS OF ANY UNIT THAT DOES NOT RESPOND
• Turn the ignition switch to the LOCK position.
• Inspect for continuity between the following connector terminals of any disconnected unit.
PCM—DLC-2
EPS control module—DLC-2
ABS HU/CM—DLC-2
Instrument cluster—DLC-2
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness, then go back to Step 1.
|
No
|
Replace the disconnected unit, then go back to Step 1.
|
||
14
|
INSPECT CAN RELATED WIRING HARNESS
• Inspect the related wiring harnesses (CAN_L and/or CAN_H) for the short circuit (to power supply or ground).
• Is the wiring harness normal?
|
Yes
|
Repair or replace the wiring harness, then go back to Step 1.
|
No
|
Go back to Step 1.
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