OPERATION USING STEERING SWITCH NOT POSSIBLE
OPERATION USING STEERING SWITCH NOT POSSIBLE
SM2337309
id160300001300
Outline
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Possible cause
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• Connector or terminal malfunction of the following parts:
• Short to power supply, short to ground, or open circuit in steering switch signal circuit
• Steering switch malfunction
• Clock spring malfunction
• Connectivity master unit (CMU) 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 ALL SYSTEM DTCs
• Perform the DTC inspection. (Refer to the [DTC INSPECTION] in the workshop manual)
• Are any DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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Go to the next step.
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2
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INSPECT STEERING SWITCH, CLOCK SPRING, AND CONNECTIVITY MASTER UNIT (CMU) CONNECTORS FOR MALFUNCTION
• Inspect the applicable connector and terminal. (Refer to the [CONNECTOR INSPECTION] in the workshop manual)
• Are the connector and terminal 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 STEERING SWITCH SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY, SHORT TO GROUND AND OPEN CIRCUIT
• Inspect the signal circuit for a short to power supply, short to ground, and an open circuit. (Refer to the [CIRCUIT INSPECTION] in the workshop manual)
• 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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4
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INSPECT STEERING SWITCH FOR MALFUNCTION
• Inspect the applicable part. (Refer to the [STEERING SWITCH INSPECTION] in the workshop manual)
• Is the part 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.
(Refer to the [STEERING SWITCH REMOVAL/INSTALLATION] in the workshop manual)
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5
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INSPECT CLOCK SPRING FOR MALFUNCTION
• Inspect the applicable part. (Refer to the [CLOCK SPRING INSPECTION] in the workshop manual)
• Is the part 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.
(Refer to the [CLOCK SPRING REMOVAL/INSTALLATION] in the workshop manual)
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Repair completion verification
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VERIFY THAT VEHICLE IS REPAIRED
• 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 contents of repair to customer)
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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.
(Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual)
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction is not resolved, replace the connectivity master unit (CMU). (Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION] in the workshop manual)
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