NO.1 ANY OF THE FOLLOWING LIGHTS DO NOT ILLUMINATE WITH THE IGNITION ON: (ABS WARNING LIGHT, BRAKE SYSTEM WARNING LIGHT, TCS/DSC INDICATOR LIGHT AND/OR DSC OFF INDICATOR LIGHT) [DYNAMIC STABILITY CONTROL (DSC)]
NO.1 ANY OF THE FOLLOWING LIGHTS DO NOT ILLUMINATE WITH THE IGNITION ON: (ABS WARNING LIGHT, BRAKE SYSTEM WARNING LIGHT, TCS/DSC INDICATOR LIGHT AND/OR DSC OFF INDICATOR LIGHT) [DYNAMIC STABILITY CONTROL (DSC)]
SM2335152
id0403b2890600
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Troubleshooting item |
Any of the following lights do not illuminate with the ignition ON: (ABS warning light, brake system warning light, TCS/DSC indicator light and/or DSC OFF indicator light) |
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Possible cause
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• DSC HU/CM does not operate.
• Communication error between DSC HU/CM and body control module (BCM)
• Communication error between body control module (BCM) and instrument cluster
• Instrument cluster malfunction
• DSC HU/CM internal malfunction
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Diagnostic procedure
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Step |
Inspection |
Results |
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
• Ignition is switched ON (engine off)
• 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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Go to the next step.
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*2
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INSPECT INSTRUMENT CLUSTER POWER SUPPLY CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT
• Inspect the power supply circuit for an open circuit and short to ground. (See CIRCUIT INSPECTION.)
• Is the 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 or replace the malfunctioning location, and perform the repair completion verification.
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*3
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INSPECT INSTRUMENT CLUSTER GROUND CIRCUIT FOR SHORT TO POWER SUPPLY AND OPEN CIRCUIT
• Inspect the ground circuit for an open circuit and short to power supply. (See CIRCUIT INSPECTION.)
• Is the circuit normal?
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Yes
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Replace the instrument cluster, and perform the repair completion verification. (Open circuit in the instrument cluster)
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No
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Repair or replace the malfunctioning location, and perform the repair completion verification.
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4
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CONFIRM DSC HU/CM DTC
• Retrieve the DSC HU/CM DTC using the M-MDS. (See DTC INSPECTION.)
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [DSC HU/CM (US)].)
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No
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If communication error message is displayed on the M-MDS screen:
• Go to the next step.
If communication error message is not displayed:
• Go to Step 7.
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*5
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INSPECT DSC HU/CM POWER SUPPLY CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT
• Inspect the power supply circuit for an open circuit and short to ground. (See CIRCUIT INSPECTION.)
• Is the 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 or replace the malfunctioning location, and perform the repair completion verification.
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*6
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INSPECT DSC HU/CM GROUND CIRCUIT FOR SHORT TO POWER SUPPLY AND OPEN CIRCUIT
• Inspect the power supply circuit for an open circuit and short to power supply. (See CIRCUIT INSPECTION.)
• Is the circuit normal?
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Yes
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Replace the DSC HU/CM, and perform the repair completion verification. (Open circuit in the DSC HU/CM)
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No
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Repair or replace the malfunctioning location, and perform the repair completion verification.
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7
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CONFIRM BODY CONTROL MODULE (BCM) DTC
• Retrieve the body control module (BCM) DTC using the M-MDS. (See DTC INSPECTION.)
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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No
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Replace the instrument cluster, and perform the repair completion verification.
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Repair completion verification
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VERIFY THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Has the malfunction symptom been eliminated?
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Yes
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Complete the symptom troubleshooting.
Explain to the customer what has been repaired.
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No
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
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• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and undamaged.