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.

2012 Suzuki SX4 BaseFACTORY OEM SERVICE PROCEDURE

Throttle Position (TP) Sensor Performance Check

Turn OFF ignition switch.
Remove air cleaner assembly. See AIR CLEANER ASSEMBLY REMOVAL AND INSTALLATION
Disconnect connector from electric throttle body assembly.
Check TP sensor (main and sub) output voltage as the following steps.
1. For TP sensor (main), arrange 3 new 1.5 V batteries (1) in series (check that total voltage is 4.5 - 5.0 V) and connect its positive terminal to "Vin" terminal (2) and negative terminal to "Ground" terminal (3) of sensor. Then using voltmeter, connect positive terminal to "Vout 1" terminal (4) of sensor and negative terminal to battery.
  
  Fig 1: Checking TP Sensor (Main And Sub) Output Voltage
  Courtesy of SUZUKI OF AMERICA CORP.
2. For TP sensor (sub), arrange 3 new 1.5 V batteries (1) in series (check that total voltage is 4.5 - 5.0 V) and connect its positive terminal to "Vin" terminal (2) and negative terminal to "Ground" terminal (3) of sensor. Then using voltmeter, connect positive terminal to "Vout 2" terminal (4) of sensor and negative terminal to battery.
  
  Fig 2: Checking Voltage
  Courtesy of SUZUKI OF AMERICA CORP.
3. Measure output voltage variation while throttle valve is opened and closed as the following specification.
  
  Fig 3: Output Voltage Variation Graph
  Courtesy of SUZUKI OF AMERICA CORP.

Factory Service Tools

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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.

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