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 MANUALSDAIHATSU1990CHARADE L3-0993CC 1.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORTESTING AND INSPECTION
1990 Daihatsu Charade L3-0993cc 1.0L
Throttle Position Sensor: Testing and Inspection
1990 Daihatsu Charade L3-0993cc 1.0LSECTION Testing and Inspection
Fig. 15 Throttle Position Sensor Pin Location.:
1. Disconnect throttle position sensor connector.
2. Measure resistance between terminals 31 and 29, Fig. 15. Throttle position sensor should be replaced if resistance is not 4.25-8.25 ohms.
3. Measure resistance between terminals 31 and 30.
4. With throttle valve closed fully resistance should be 3.5-10.3 ohms.
5. With throttle valve opened fully resistance should be .3-6.3 ohms.
6. Measure resistance between terminals 32 and 29.
7. With throttle valve closed fully resistance should be 350 ohms or less.
8. With throttle valve opened more than 1.5° resistance should be 1M ohms.
9. Replace throttle position sensor if specifications are not met.
10. Perform TPS circuit test. (1.0L Engine)
Fig. 48 ECU System Diagnosis, Throttle Position Sensor Check (Part 1 Of 2):
Fig. 48 ECU System Diagnosis, Throttle Position Sensor Check (Part 2 Of 2):
10. Perform TPS circuit test. (1.3L Engine)
Fig. 59 ECU System Diagnosis, Throttle Position Sensor Check (Part 1 Of 3):
Fig. 59 ECU System Diagnosis, Throttle Position Sensor Check (Part 2 Of 3):
Fig. 59 ECU System Diagnosis, Throttle Position Sensor Check (Part 3 Of 3):
RENDER: 1.0x
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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.