Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUZUKI2001GRAND VITARA JLS, STANDARDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSSYSTEM TESTSBRAKELIGHT SWITCH CIRCUIT CHECK
2001 Suzuki Grand Vitara JLS, Standard
BRAKELIGHT Switch Circuit Check
2001 Suzuki Grand Vitara JLS, StandardSECTION BRAKELIGHT Switch Circuit Check
- Turn ignition switch to OFF position. Disconnect CC ECU harness connector. Turn ignition switch to ON position. Depress brake pedal. Using DVOM, measure voltage between ground and CC ECU harness connector terminal No. 2 (Blue/Yellow wire on Esteem; Green/White wire on all others). See Fig 1 . With brake pedal depressed, reading should be 10-14 volts. Release brake pedal. Reading should be zero volts. If both readings are as specified, go to next step. If either reading is not as specified, go to step 3 .
- Using DVOM, measure voltage between ground and CC ECU harness connector terminal No. 6 (Gray/Red wire on Esteem; Yellow/Green wire on all others). See Fig 1 . With brake pedal released, reading should be 10-14 volts. Depress brake pedal. Reading should be zero volts. If both readings are as specified, go to step 4 . If either reading is not as specified, go to next step.
- Check fuses, wiring and harness connectors. See WIRING DIAGRAMS . Repair as necessary. If circuits are okay, go to next step.
- Check brakelight switch. See BRAKELIGHT SWITCH under COMPONENT TESTS.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.