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 MANUALSDAIHATSU1991CHARADE L4-1295CC 1.3LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSBARO / MAP SENSOR SWITCHING VALVETESTING AND INSPECTION
1991 Daihatsu Charade L4-1295cc 1.3L
BARO / MAP Sensor Switching Valve: Testing and Inspection
1991 Daihatsu Charade L4-1295cc 1.3LSECTION Testing and Inspection
1. With ignition off, disconnect vacuum and electrical connections from pressure VSV.
2. Measure resistance of pressure VSV. Resistance should be 20-60 ohms.
3. Connect compressed air to pressure VSV as shown if Fig. 78. No air should exit from any other port.
Fig. 78 Pressure VSV Test 1:
4. Connect compressed air to pressure VSV as shown in Fig. 79. Air should exit only as shown.
Fig. 79 Pressure VSV Test 2:
5. Connect battery voltage to pressure VSV.
6. Connect compressed air as shown in Fig. 80. Air should exit only as shown.
Fig. 80 Pressure VSV Test 3:
7. Connect compressed air as shown in Fig. 81. No air should exit from any other port.
Fig. 81 Pressure VSV Test 4:
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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.