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 MANUALSSUZUKI2013SX4 CROSSOVER, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 13 (LIGHTING SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESTURN SIGNAL LAMPS AND/OR INDICATORS INOPERATIVECIRCUIT/SYSTEM TESTING
2013 Suzuki SX4 Crossover, Automatic CVT Trans
Circuit/System Testing
2013 Suzuki SX4 Crossover, Automatic CVT TransSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
Turn Signal Multifunction Switch Circuit Testing
- Ignition OFF, disconnect the harness connector at the turn signal multifunction switch.
- Ignition ON, install a test lamp between the turn signal voltage supply circuit and ground. The test lamp should flash ON and OFF.
- If the test lamp does not flash, test the voltage supply circuit for a short to ground or an open/high resistance.
- Install a 3-amp fused jumper wire between the voltage supply circuit and the turn signal circuit. Verify that the proper turn signal lamps are ON.
- If the turn signals are not ON, test the signal circuit of the turn signal multifunction switch for a short to voltage, short to ground or an open/high resistance.
- If all circuits test normal, test or replace the turn signal multifunction switch.
Park/Turn Signal/Turn Signal Indicator Circuit Testing
- Ignition OFF, remove the inoperative light bulb.
- Test for less than 1.0 Ω of resistance between the ground circuit and ground.
- If greater than 1.0 Ω, test the ground circuit for an open/high resistance.
- Connect a test lamp between the control circuit and the ground circuit.
- Ignition ON, turn ON the appropriate turn signal, the test lamp should flash.
- If the test lamp remains ON all the time, test for a short to voltage on the control circuit. If the circuit tests normal, test or replace the BCM.
- If the test lamp remains OFF all the time, test for a short to ground or an open/high resistance on the control circuit. If the circuit tests normal, test or replace the turn signal multifunction switch.
- If all circuits test normal, test or replace the light bulb.
Instrument Panel (I/P) Circuit Testing
- Ignition OFF, disconnect the harness connector at the I/P.
- Test for less than 1.0 Ω of resistance between the ground circuit and ground.
- If greater than 1.0 Ω, test the ground circuit for an open/high resistance.
- Connect a test lamp between the control circuit and the ground circuit.
- Ignition ON, turn ON the appropriate turn signal. The test lamp should flash.
- If the test lamp remains ON all the time, test for a short to voltage on the control circuit. If the circuit tests normal, test or replace the BCM.
- If the test lamp remains OFF all the time, test for a short to ground or an open/high resistance on the control circuit. If the circuit tests normal, test or replace the turn signal multifunction switch.
- If all circuits test normal, replace the I/P.
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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.