Diagnostic procedure
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STEP
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INSPECTION
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ACTION
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1
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VERIFY WHICH BRAKE SWITCH CIRCUIT IS MALFUNCTIONING
• Does brake light illuminate when brake pedal depressed?
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Yes
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Go to Step 6.
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No
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Go to next step.
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2
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INSPECT STOP 15 A FUSE FOR FUSION
• Is STOP 15 A fuse okay?
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Yes
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Go to next step.
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No
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Replace fuse after inspecting and repairing wiring harness.
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* 3
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INSPECT WIRING HARNESS BETWEEN STOP 15 A FUSE AND BRAKE SWITCH FOR CONTINUITY
• Depress brake pedal.
• Is voltage at brake switch connector terminal D approximately 12 V?
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Yes
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Go to Step 5.
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No
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Go to next step.
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* 4
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INSPECT WIRING HARNESS BETWEEN STOP 15 A FUSE AND BRAKE SWITCH FOR CONTINUITY
• Is voltage at brake switch connector terminal B approximately 12 V?
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Yes
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Inspect brake switch.
(See BRAKE SWITCH INSPECTION)
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No
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Repair wiring harness. (STOP 15 A fuse-Brake switch)
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* 5
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INSPECT WIRING HARNESS BETWEEN BRAKE SWITCH AND BRAKE LIGHT FOR CONTINUITY
• Depress brake pedal.
• Is voltage at brake light connector terminal (power supply side) approximately 12 V?
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Yes
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Inspect following electrical parts.
• Brake light bulb
• Wiring harness between brake light and ground
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No
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Repair wiring harness. (Brake switch-Brake light)
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* 6
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INSPECT WIRING HARNESS BETWEEN BRAKE SWITCH AND CRUISE ACTUATOR FOR CONTINUITY
• Depress brake pedal.
• Is voltage at cruise actuator connector terminal C approximately 12 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. (Cruise actuator-Brake switch)
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* 7
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VERIFY WHICH IS MALFUNCTIONING, CRUISE ACTUATOR AND WIRING HARNESS (BRAKE SWITCH 2 AND CRUISE ACTUATOR) OR BRAKE SWITCH 2
• Disconnect brake switch connector.
• Turn ignition switch ON position.
• Is voltage at brake switch connector terminal A approximately 12 V?
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Yes
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Go to next step.
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No
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Inspect brake switch 2.
(See BRAKE SWITCH INSPECTION)
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* 8
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INSPECT WIRING HARNESS BETWEEN BRAKE SWITCH 2 AND CRUISE ACTUATOR FOR SHORT TO POWER SUPPLY
• Turn ignition switch to LOCK position.
• Disconnect cruise actuator connector.
• Turn ignition switch ON position.
• Is voltage at cruise actuator connector terminal K approximately 12 V?
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Yes
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Repair wiring harness. (Cruise actuator-Brake switch 2)
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No
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Replace cruise actuator.
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