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STEP
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INSPECTION
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ACTION
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1
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VERIFY DTC
• Verify the DTCs in the following modules using the WDS or equivalent.
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- PCM
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- ABS HU/CM
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- Instrument cluster
• Are any DTCs displayed?
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Yes
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Go to the next step.
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No
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Go to Step 5.
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2
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VERIFY THAT ANY DTCS, EXCEPT THE FOLLOWING, ARE DISPLAYED
• Are any DTCs, except the following, displayed?
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- U0073
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- U0121
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- U1900
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- U2023
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Yes
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Repair the location of malfunction according to the corresponding DTC inspection.
Go to the next step.
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No
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Go to the next step.
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3
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VERIFY THAT FOLLOWING DTCS ARE DISPLAYED
• Are any of the following DTCs displayed?
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- PCM: U0073, U0121
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- ABS HU/CM: U1900, U2023
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- Instrument cluster U0073, U1900
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Yes
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Repair the location of malfunction according to CAN system inspection or DTC inspection.
Go to the next step.
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No
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Troubleshooting completed.
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4
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VERIFY THAT REPAIR OPERATION IS COMPLETED
• Using the WDS or equivalent, clear DTCs from the PCM memory.
• Start the engine.
• Are any dtcs related to can displayed?
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Yes
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Go to Step 3.
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No
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Troubleshooting completed.
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5
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VERIFY COMMUNICATION BETWEEN WDS OR EQUIVALENT AND CAN RELATED MODULES
• Is the communication between WDS or equivalent and the following modules normal?
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- PCM
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- ABS HU/CM
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- Instrument cluster
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Yes
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Troubleshooting completed.
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No
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Go to the next step.
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6
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VERIFY CONDITION OF ANY MODULE THAT DOES NOT RESPOND
• Inspect the power supply and the ground circuit for any module that does not respond.
• Are the power supply and the ground circuit normal?
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Yes
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Go to the next step.
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No
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Repair the location of malfunction.
After repairing the location of malfunction, repeat the inspection from Step 1.
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7
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VERIFY WIRING HARNESS AND CONNECTOR BETWEEN NON-RESPONDING MODULE AND DLC-2
• Turn the ignition switch to the LOCK position.
• Inspect the wiring harness and connector between any unit that does not respond and the DLC-2.
PCM-DLC-2
16-F
17-E
ABS HU/CM-DLC-2
• P-F
• D-E
Instrument cluster-DLC-2
3E-F
3C-E
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Yes
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Go to the next step.
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No
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Repair the location of malfunction.
After repairing the location of malfunction, repeat the inspection from Step 1.
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8
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INSPECT CAN WIRING HARNESS VOLTAGE
• Connect the connector of each module.
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between DLC-2 terminals CAN_L and CAN_H.
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- F-E
• Is the voltage 2.0-3.0 V?
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Yes
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Go to the next step.
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No
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Go to Step 12.
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9
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MEASURE CAN WIRING HARNESS RESISTANCE
• Turn the ignition switch to the LOCK position.
• Measure the resistance between DLC-2 terminals CAN_L and CAN_H.
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- F-E
• Is the resistance 59-65 ohms?
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Yes
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Replace the module that does not respond, then repeat the inspection from Step 1.
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No
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Go to the next step.
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10
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INSPECT PCM
• Disconnect the PCM connector.
• Measure the resistance between PCM connector terminals.
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- 16-17 (part-side)
• Is the resistance 118-130 ohms?
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Yes
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Go to the next step.
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No
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Replace the PCM, then go to the next step.
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11
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INSPECT INSTRUMENT CLUSTER
• Disconnect the instrument cluster connector.
• Measure the resistance between instrument cluster connectors.
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- 3E-3C (part-side)
• Is the resistance 118-130 ohms?
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Yes
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Go to the next step.
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No
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Replace the instrument cluster, then go to the next step.
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12
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DETERMINE WHETHER THE MALFUNCTION RESULTS FROM THE WIRING HARNESS OR THE MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the connector for any module that does not respond. (If there are multiple modules that do not respond, disconnect only one module.)
• Turn the ignition switch to the ON position.
• Measure the voltage between DLC-2 terminals CAN_L and CAN_H.
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- F-E
• Is the voltage 2.0-3.0 V?
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Yes
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Go to the next step.
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No
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Disconnect another module that does not respond, then repeat inspection Step 12.
If the inspection is completed by disconnecting all the modules one by one, go to Step 14.
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13
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INSPECT WIRING HARNESS FOR DISCONNECTED MODULE
• Turn the ignition switch to the LOCK position.
• Inspect for continuity between the following terminals in the disconnected module connector (harness-side).
PCM
16-other terminal
17-other terminal
ABS HU/CM
• P-other terminal
• D-other terminal
Instrument cluster
3E-other terminal
3C-other terminal
Is there continuity?
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Yes
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After replacing the wiring harness, repeat the inspection from Step 1.
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No
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After replacing the disconnected module, repeat the inspection from Step 1.
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14
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INSPECT CAN WIRING HARNESS
• Inspect the CAN wiring harness (CAN_L, CAN_H) for short to power supply or ground.
• Is the wiring harness normal?
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Yes
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After replacing the wiring harness, repeat the inspection from Step 1.
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No
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Repeat the inspection from Step 1.
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