Justy Hatchback 2WD L3-1.2L SOHC (MPFI) (1992)
Pressure Sensor Harness
CHECK VOLTAGE AND RESISTANCE
1.
With ignition "ON" and engine not running, measure voltage across ECU connector terminals as follows:
Connector & terminal:
Voltage:
(F121)6-(F121)1
0.15-4.85V
(F121)6-(F121)2
0.15-4.85V
2.
With ignition "OFF," disconnect ECU connector and measure resistance between ECU connector and sensor connector as follows:
Connector & terminal:
Resistance:
(F121)6-(F113)2
Below 1 Ohm
(F121)1-(F113)1
Below 1 Ohm
(F121)2-(F113)1
Below 1 Ohm
3.
Measure resistance between ECU connector terminal (F121)6 and ground. It should be infinite.
Air Temperature Sensor Testing
CHECK AIR TEMPERATURE SENSOR
1.
With ignition switch "OFF," disconnect sensor connector.
2.
Measure resistance between sensor terminals (F113)1 and (F113)2 for these resistance values:
Resistance:
Temperature:
2 - 3K Ohms
20° C (68° F)
270 - 370 Ohms
80° C (176° F)