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1
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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2
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INSPECT CLOCK SPRING CONNECTOR CONDITION
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Warning
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• Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner seat belts, which may seriously injure you. Read the air bag system service warnings and cautions before handling the air bag system components.
• Switch the ignition to off.
• Disconnect the clock spring connector.
• Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal and/or connector, then go to Step 10.
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No
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Go to the next step.
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3
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INSPECT CRUISE CONTROL SWITCH CONNECTOR CONDITION (CLOCK SPRING SIDE)
• Disconnect the cruise control switch connector (clock spring side).
• Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal and/or connector, then go to Step 10.
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No
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Go to the next step.
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4
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INSPECT CLOCK SPRING
• Inspect the clock spring.
• Is there any malfunction?
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Yes
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Replace the clock spring, then go to Step 10.
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No
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Go to the next step.
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5
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INSPECT CRUISE CONTROL SWITCH
• Inspect the cruise control switch.
• Is there any malfunction?
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Yes
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Replace the steering switch, then go to Step 10.
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No
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Go to the next step.
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6
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INSPECT CRUISE CONTROL SWITCH CIRCUITS FOR SHORT TO GROUND
• Clock spring is disconnected.
• Inspect for continuity between clock spring terminal 2L (wiring harness-side) and body ground.
• Is there continuity?
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Yes
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If the short to ground circuit could be detected:
• Repair or replace the wiring harness for a possible short to ground.
If the short to ground circuit could not be detected:
• Replace the PCM (short to ground in the PCM internal circuit).
Go to Step 10.
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No
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Go to the next step.
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7
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INSPECT PCM CONNECTOR CONDITION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal and/or connector, then go to Step 10.
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No
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Go to the next step.
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8
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INSPECT CRUISE CONTROL SWITCH CIRCUITS FOR SHORT TO POWER SUPPLY
• Clock spring and PCM connectors are disconnected.
• Switch the ignition to ON (engine off).
• Measure the voltage between the following terminals (wiring harness-side) and body ground:
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― Clock spring terminal 2L
― Clock spring terminal 2N
• Is there any voltage?
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Yes
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Repair or replace the wiring harness for a possible short to power supply, then go to Step 10.
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No
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Go to the next step.
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9
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INSPECT CRUISE CONTROL SWITCH CIRCUITS FOR OPEN CIRCUIT
• Clock spring and PCM connectors are disconnected.
• Switch the ignition to off.
• Inspect for continuity between the following terminals (wiring harness-side):
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― Clock spring terminal 2L and PCM terminal 1BC
― Clock spring terminal 2N and PCM terminal 1AM
• Is there continuity?
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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 wiring harness for a possible open circuit, then go to the next step.
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10
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VERIFY TROUBLESHOOTING OF DTC P0579:00 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine.
• Perform the DTC Reading Procedure.
• Is the same DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the PCM.
Go to the next step.
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No
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Go to the next step.
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11
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VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• 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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DTC troubleshooting completed.
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