Charade L4-1295cc 1.3L (1989)
Barometric Pressure Sensor: 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.