NO. 3 ABS WARNING LIGHT ILLUMINATES


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3

ABS warning light illuminates

POSSIBLE CAUSE

• Poor connection of ABS HU/CM connector, terminal damage
• ABS HU/CM malfunction
• Poor connection of instrument cluster connector, terminal damage
• Instrument cluster malfunction
• Short circuit in wiring harness between CAN-L, CAN-H and GND
• Open circuit in CAN wiring harness (CAN-L, CAN-H)
• Short circuit in CAN wiring harness (CAN-L, CAN-H)

Diagnostic procedure

STEP

INSPECTION

ACTION

1
• Start the engine.
• Does the ABS warning light turn off?
Yes
The system is normal.
No
Go to the next step.
2
• Are there a number of warning lights illuminated?
Yes
Go to Step 4.
No
Go to the next step.
3
• Start the instrument cluster input/output check mode.
• Does the ABS warning light turn off with a check code other than 26?
Yes
Inspect the ABS HU/CM (connection, etc.).

If poor connection of ABS HU/CM connector

• Securely connect the ABS HU/CM connector.

If the ABS HU/CM side connector is wrong

• Replace the ABS HU/CM.

If the wiring harness-side connector is wrong

• Repair or replace the pins and/or the connector.
No
Replace the instrument cluster.
4
• Disconnect the negative battery cable.
• Measure the resistance between the DLC-2 terminals F and E.
• Is the resistance 54-66 ohms?
Yes
Go to the next step.
No
Go to Step 6.
5
• Disconnect the negative battery cable.
• Inspect the DLC-2 terminals F and E for short to power supply or GND.
• Is there any malfunction?
Yes
Inspect the wiring harness and module connected with CAN.
Repair or replace if necessary.
No
Replace the instrument cluster.
6
• Turn the ignition switch to OFF position.
• Inspect the connection of the instrument cluster connector (24-pin).
• Disconnect the instrument cluster connector (24-pin).
• Inspect both the instrument cluster and wiring harness-side connector terminal 2X and 2W for poor connection (such as damaged/pulled-out pins, corrosion).
• Are all the pins normal?
Yes
Replace the instrument cluster.
No

If poor connection of instrument cluster connector

• Securely connect the instrument cluster connector.

If the instrument cluster side connector is wrong

• Replace the instrument cluster.

If the wiring harness-side connector is wrong

• Repair or replace the pins and/or the connector.