DTC B112A:17 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]
id09021c404900
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DETECTION CONDITION
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Voltage higher than the specification (2.2—6.5 V) is detected in the IG2 monitor input circuit for 1 s with the IG2 relay output circuit not operating
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POSSIBLE CAUSE
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• Connector or terminal malfunction
• Short circuit to power supply in wiring harness between relay block connector terminal 1C and keyless control module connector terminal 4X
• Relay block malfunction
• Keyless control module malfunction
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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INSPECT RELAY BLOCK CONNECTOR CONDITION
• Switch the ignition to off.
• Disconnect the negative battery cable.
• Disconnect the relay block connector.
• Inspect the connector and terminals (corrosion, damage, pin disconnection).
• Is the connector 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/replace the connector or terminal.
After repair procedure, go to Step 5.
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2
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INSPECT RELAY BLOCK
• Inspect the relay block.
• Is the relay block normal?
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Yes
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Go to the next step.
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No
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Replace the relay block.
After replacement, go to Step 5.
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3
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INSPECT KEYLESS CONTROL MODULE CONNECTOR CONDITION
• Disconnect the keyless control module connector.
• Inspect the connector and terminals (corrosion, damage, pin disconnection).
• Is the connector 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/replace the connector or terminal.
After repair procedure, go to Step 5.
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4
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INSPECT IG2 MONITOR INPUT CIRCUIT FOR SHORT CIRCUIT TO POWER SUPPLY
• Reconnect the negative battery cable.
• Measure the voltage at the keyless control module connector terminal 4X.
• Can the voltage be measured?
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Yes
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Repair/replace the wiring harness.
After repair procedure, go to the next step.
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No
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Go to the next step.
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5
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VERIFY DTC
• Reconnect the disconnected connectors and the negative battery cable.
• Clear DTC using the M-MDS.
• Verify DTC using the M-MDS.
• 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 keyless control module.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
Go to the next step.
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No
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Go to the next step.
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6
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VERIFY THAT NO OTHER DTCs ARE PRESENT
• Are there other DTCs output?
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Yes
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Perform the corresponding DTC inspection.
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No
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DTC troubleshooting completed.
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