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STEP
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INSPECTION
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ACTION
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1
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INSPECT POWER SUPPLY CIRCUIT OF COIL ANTENNA
• Disconnect coil antenna connector.
• Turn ignition switch to ON position.
• Measure voltage at terminal D of coil antenna connector.
• Is voltage more than 8 V?
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Yes
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Go to next step.
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No
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Repair wiring harness.
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2
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INSPECT WIRING HARNESS BETWEEN COIL ANTENNA AND GROUND
• Turn ignition switch to LOCK position.
• Inspect wiring harness between coil antenna connector terminal C and ground for following.
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- Short to power supply
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- Open circuit
• Is wiring harness okay?
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Yes
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Go to next step.
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No
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Repair wiring harness.
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3
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INSPECT COIL ANTENNA INPUT SIGNAL CIRCUIT
• Connect coil antenna connector.
• Turn ignition switch to ON position.
• Measure voltage at terminal B of coil antenna connector.
• Is voltage more than 8 V?
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Yes
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Go to Step 7.
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No
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Go to next step.
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4
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INSPECT COIL ANTENNA INPUT SIGNAL CIRCUIT
• Turn ignition switch to LOCK position.
• Disconnect PCM connector.
• Turn ignition switch to ON position.
• Measure voltage at terminal 2T of PCM connector.
• Is voltage more than 8 V?
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Yes
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Replace PCM and reprogram immobilizer system.
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No
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Go to next step.
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5
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INSPECT COMMUNICATION CIRCUIT (INPUT) FOR CONTINUITY
• Turn ignition switch to LOCK position.
• Disconnect coil antenna and PCM connectors.
• Is there continuity between coil antenna connector terminal B and PCM connector terminal 2T?
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Yes
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Go to next step.
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No
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Repair wiring harness.
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6
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INSPECT COIL ANTENNA INPUT SIGNAL CIRCUIT
• Measure resistance between coil antenna connector terminal B and ground.
• Is resistance more than 10 kilohms?
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Yes
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Replace coil antenna.
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No
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Repair wiring harness.
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7
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INSPECT COIL ANTENNA OUTPUT SIGNAL CIRCUIT
• Connect coil antenna and PCM connectors.
• Turn ignition switch to ON position.
• Measure voltage at terminal A of coil antenna connector.
• Is voltage more than 8 V?
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Yes
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Replace coil antenna.
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No
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Go to next step.
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8
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INSPECT COIL ANTENNA OUTPUT SIGNAL CIRCUIT
• Turn ignition switch to LOCK position.
• Disconnect coil antenna connector.
• Turn ignition switch to ON position.
• Measure voltage at terminal A of coil antenna connector.
• Is voltage more than 8 V?
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Yes
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Replace coil antenna.
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No
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Go to next step.
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9
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INSPECT COMMUNICATION CIRCUIT (OUTPUT) FOR CONTINUITY
• Turn ignition switch to LOCK position.
• Disconnect PCM connector.
• Is there continuity between coil antenna connector terminal A and PCM connector terminal 2Q?
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Yes
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Go to next step.
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No
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Repair wiring harness.
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10
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INSPECT COIL ANTENNA OUTPUT SIGNAL CIRCUIT
• Measure resistance between PCM connector terminal 2Q and ground.
• Is resistance more than 10 kilohms?
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Yes
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Replace PCM and reprogram immobilizer system.
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No
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Repair wiring harness.
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