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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSDAIHATSU1991CHARADE L4-1295CC 1.3LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSBAROMETRIC PRESSURE SENSORTESTING AND INSPECTION
1991 Daihatsu Charade L4-1295cc 1.3L
Barometric Pressure Sensor: Testing and Inspection
1991 Daihatsu Charade L4-1295cc 1.3LSECTION Testing and Inspection
Fig. 8 Pressure Sensor Specification Chart.:
Fig. 9 Pressure Sensor Specification Chart.:
1. Connect ECU test harness.
2. Proceed as follows:
a. Measure voltage between terminals 6 and 39.
b. Refer to Fig. 9 for voltage specification.
c. If voltage does not conform to specification, measure voltage between terminals 5 and 36 on the ECU test harness.
d. Ensure voltage is 4.5-5.5 volts, then replace pressure sensor. When pressure sensor is replaced it is necessary to replace the fuel and air filter.
e. If voltage between terminals 5 and 36 is not 4.5-5.5 volts, check wiring between ECU and pressure sensor.
f. Apply 7.87 inches of vacuum to the pressure sensor.
g. Ensure voltage between terminals 6 and 39 drops by .65-.95 volts.
h. If voltage does not drop as specified, replace the pressure sensor.
3. Perform Pressure sensor test.
Fig. 55 ECU System Diagnosis, Pressure Sensor Check (Part 1 Of 2):
Fig. 55 ECU System Diagnosis, Pressure Sensor Check (Part 2 Of 2):
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.