DTC B2975[PJB]
id090208836500
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DTC B2975 |
PTC heater line overload |
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DETECTION CONDITION
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Short to power supply in wiring harness between PJB and PTC heater
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POSSIBLE CAUSE
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• Short to power supply in wiring harness between PJB terminal J-04 A and PTC heater terminal 2B
• PTC heater malfunction
• PJB malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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INSPECT PTC HEATER CONNECTOR
• Turn the ignition switch off.
• Disconnect the PTC heater connector.
• Inspect the PTC heater connector terminals 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, then 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 PJB CONNECTOR
• Disconnect the PJB connector.
• Inspect the PJB connector terminals 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, then go to Step 4.
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No
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Go to the next step.
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3
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INSPECT PTC HEATER SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between PJB terminal J-04 A (wiring harness-side) and body GND.
• Is the voltage B+?
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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 the next step.
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No
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Replace the PTC heater, then go to the next step.
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4
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VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PJB memory using the M-MDS.
• Turn the ignition switch off then ON.
• Is the same DTC present?
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Yes
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Replace the PJB.
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No
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DTC troubleshooting completed.
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