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STEP
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INSPECTION
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ACTION
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1
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INSPECT DTC INDICATION
• Using the WDS or equivalent, inspect if DTCs are displayed for the following module:
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- PCM
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- TCM
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- ABS (ABS/TCS) HU/CM
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- DSC HU/CM
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- 4WD control module
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- Keyless control module
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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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INSPECT CAN SYSTEM-RELATED DTC
• Are any DTCs other than the following displayed?
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- U0073
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- U0100
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- U0101
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- U0114
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- U0121
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- U0155
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- U0323
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- U0516
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- U1900
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- U2023
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- U2511
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- U2516
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Yes
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Repair the malfunctioning part by following the related 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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INSPECT CAN SYSTEM-RELATED DTC
• Are any of the following DTCs displayed?
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- PCM: U0073, U0101, U0121, U0155
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- TCM: U0073, U0100
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- ABS (ABS/TCS) HU/CM, DSC HU/CM: U0073, U0100, U0101, U0114, U0155, U2511
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- 4WD control module: U0073, U0100, U0121
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- Keyless control module: U0073, U0100, U0323, U2023
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- Instrument cluster: U1900, U2516
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Yes
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Repair the malfunctioning part by following the 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 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?
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Yes
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Go back to Step 3.
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No
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Troubleshooting completed.
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5
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INSPECT COMMUNICATION CONDITION
• Is there a response from the following modules?
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- PCM
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- TCM
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- ABS (ABS/TCS) HU/CM
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- DSC HU/CM
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- 4WD control module
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- Keyless control module
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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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INSPECT MODULES THAT DO NOT RESPOND
• Inspect the power supply and the ground circuit for any units that do not respond.
• Are they 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 malfunctioning part, then go back to Step 1.
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7
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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 (except MZR-CD (RF Turbo))-DLC-2
2U-F
2R-E
PCM (MZR-CD (RF Turbo))-DLC-2
12-F
39-E
TCM (JA5AX-EL)-DLC-2
2J-F
2M-E
TCM (FS5A-EL)-DLC-2
2W-F
2X-E
ABS (ABS/TCS) HU/CM-DLC-2
• O-F
• R-E
DSC HU/CM-DLC-2
• AG-F
• AF-E
4WD control module-DLC-2
• G-F
• H-E
Keyless control module-DLC-2
3AA-F
3Z-E
Instrument cluster-DLC-2
2X-F
2W-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 malfunctioning part, then go back to Step 1.
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8
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INSPECT WIRING HARNESS
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between the following terminals.
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- DLC-2 terminals F and 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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INSPECT WIRING HARNESS
• Turn the ignition switch to the LOCK position.
• Measure the resistance between the following terminals.
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- DLC-2 terminals F and E
• Is the resistance 59-65 ohms?
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Yes
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Replace the modules that do not respond, then go back to 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 following terminals.
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- PCM terminals 2U and 2R (part-side) (except MZR-CD (RF Turbo))
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- PCM terminals 13 and 19 (part-side) (MZR-CD (RF Turbo))
• 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 the following terminals.
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- Instrument cluster terminals 2X and 2W (part-side)
• Is the resistance 118-130 ohms?
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Yes
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Go to 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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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.
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- DLC-2 terminals F and E
• Is 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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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
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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 (except MZR-CD (RF Turbo))
2U-other terminals
2R-other terminals
PCM (MZR-CD (RF Turbo))
13-other terminals
39-other terminals
TCM (JA5AX-EL)
2J-other terminals
2M-other terminals
TCM (FS5A-EL)
2W-other terminals
2X-other terminals
ABS (ABS/TCS) HU/CM
• O-other terminals
• R-other terminals
DSC HU/CM
• AG-other terminals
• AF-other terminals
4WD control module
• G-other terminals
• H-other terminals
Keyless control module
3AA-other terminals
3Z-other terminals
Instrument cluster
2X-other terminals
2W-other terminals
Is there continuity?
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Yes
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Repair or replace the wiring harness, then go back to Step 1.
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No
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Replace the disconnected unit, then go back to Step 1.
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14
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INSPECT KLN RELATED WIRING HARNESS
• Inspect the related wiring harnesses (KLN) for the short circuit (to power supply or ground).
• Is the wiring harness normal?
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Yes
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If wiring harness is normal but ABS (ABS/TCS) HU/CM or DSC HU/CM does not respond, inspect ABS (ABS/TCS) HU/CM or DSC HU/CM.
Go back to Step 1.
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No
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Repair or replace the wiring harness, then go back to Step 1.
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15
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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?
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Yes
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Go back to Step 1.
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No
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Replace the wiring harness, then go back to Step 1.
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