NO.2 NEITHER ABS WARNING LIGHT NOR BRAKE SYSTEM WARNING LIGHT ILLUMINATE WITH SWITCH THE IGNITION TO ON [ABS]
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2
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Neither ABS warning light nor BRAKE system warning light illuminate with switch the ignition to on.
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[TROUBLESHOOTING HINTS]
• Malfunction of instrument cluster or ABS HU/CM
• Improper configuration (instrument cluster)
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Diagnostic procedure
STEP |
INSPECTION |
ACTION |
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1
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VERIFY WHERE MALFUNCTION IS IN WARNING LIGHTS AND INDICATOR LIGHTS’ COMMON POWER SUPPLY, OR IN OTHER WARNING LIGHTS AND INDICATOR LIGHTS
• Connect the M-MDS to DLC-2.
• Turn on all warning lights and indicator lights using the instrument cluster PID WL+IL of active command modes.
• Do other warning and indicator lights illuminate?
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Yes
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Go to Step 4.
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No
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If communication error message is displayed on M-MDS screen, go to the next step.
If communication error message is not displayed, replace the instrument cluster.
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2
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INSPECT INSTRUMENT CLUSTER POWER SUPPLY FUSE
• Is instrument cluster ignition power supply fuse normal?
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Yes
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Go to the next step.
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No
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Inspect for a short to ground on blown fuse’s circuit.
Repair or replace as necessary.
Install appropriate amperage fuse.
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*3
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VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN INSTRUMENT CLUSTER POWER SUPPLY AND INSTRUMENT CLUSTER FOR CONTINUITY) OR ELSEWHERE
• Switch the ignition to ON.
• Measure voltage at instrument cluster connector (24-pin) terminal 2V.
• Is voltage approx. 12 V?
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Yes
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Go to the next step.
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No
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Inspect for open circuit between instrument cluster and ignition.
Repair or replace as necessary.
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*4
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VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN INSTRUMENT CLUSTER AND GND FOR CONTINUITY) OR INSTRUMENT CLUSTER
• Switch the ignition to off.
• Disconnect the instrument cluster.
• Verify continuity between the instrument cluster harness-side connector terminal 2B and GND.
• Is there continuity?
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Yes
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Replace the instrument cluster. (open circuit in instrument cluster)
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No
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Repair or replace malfunctioning part for open circuit and poor contact in GND point.
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5
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CONFIRM INSTRUMENT CLUSTER AND ABS HU/CM DTC
• Retrieve the instrument cluster and ABS HU/CM DTC using the M-MDS.
(See ON-BOARD DIAGNOSIS [ABS].)
• Is there any DTC retrieved?
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Yes
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Perform the applicable DTC troubleshooting procedure.
(See ON-BOARD DIAGNOSIS [ABS].)
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No
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Replace the instrument cluster.
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