Power Door Lock System Symptom Diagnosis
Precautions: Precautions for Diagnosing Trouble · Precautions for Replacing Ignition Key (Ignition Switch Model) · Precautions for Transmitter Disposal (Ignition Switch Model) · Precautions for Replacing Keyless Entry Control Module (Ignition Switch Model) · Precautions for Body, Cab and Accessories · General safety (00)
| Condition | Possible Cause | Action |
|---|---|---|
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Only one door cannot be locked / unlocked
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Faulty system circuit (including relays and fuses)
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—
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Faulty door lock assembly (including door lock open rod and door lock wires)
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Replace door lock open rod and door lock wires.
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Damaged and deformed inside door handle
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Replace inside door handle.
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All doors cannot be locked / unlocked
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Faulty BCM
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Refer to Inspection of BCM and Its Circuits.
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Faulty keyless entry / keyless start control module
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•Ignition switch model: Refer to Inspection of Keyless Entry Control Module and Its Circuits.
•Keyless push start model: Refer to Inspection of Keyless Start Control Module and Its Circuits. |
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Faulty system circuit (including relays and fuses)
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—
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Faulty power door lock switch
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Refer to Power Door Lock Switch Inspection.
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Faulty key cylinder
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Check key cylinder.
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Malfunction request switches (Keyless push start model)
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Faulty keyless push start system remote controller
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Faulty BCM
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Refer to Inspection of BCM and Its Circuits.
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Faulty system circuit (including relays and fuses)
|
—
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Faulty request switch
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Refer to Request Switch Inspection.
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Faulty keyless start control module
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Faulty answer-back function of interior light
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Dome light switch is in other than DOOR position
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Check dome light switch is in DOOR position.
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Faulty dome light switch
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Check dome light switch.
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Blown dome light bulb
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Replace dome light bulb.
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Faulty BCM
|
Refer to Inspection of BCM and Its Circuits.
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Faulty system circuit (including relays and fuses)
|
—
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Faulty answer-back function of hazard warning light
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Faulty BCM
|
Check if answer-back function of hazard warning light is in no-flashing mode.
Refer to Inspection of BCM and Its Circuits.
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Faulty system circuit (including relays and fuses)
|
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