Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 492

Code No. 13 Intake air temperature sensor system
Range of Check
Ignition switch: ON
Excluding 60 seconds after the ignition switch is turned to ON or immediately
after the engine starts.
Set conditions
Sensor output voltage is 4.6 V or more (corresponding to an intake air temperature
of –45_C or less) for 4 seconds.
or
Sensor output voltage is 0.2V or less (corresponding to an intake air temperature
of 125_C or more) for 4 seconds.
Check the intake air temperature sen-
sor. (Refer to P.13B-71.)
OK
Measure at the intake air temperature
sensor connector A-56.
Disconnect the connector, and
measure at the harness side.
Voltage between 1 and earth
(Ignition switch: ON)
OK: 4.5 – 4.9 V
Continuity between 2 and earth
OK: Continuity
OK
Check the following connector:
A-56
OK
Check trouble symptom.
NG
Replace the engine-ECU.
MPI –
Troubleshooting
NG
Replace
NG
Check the following connector:
B-31
Check trouble symptom.
Check the harness wire between the
engine-ECU and the intake air tempera-
ture sensor connector.
Replace the engine-ECU.
NG
Repair
Probable cause
Malfunction of the intake air temperature sensor
Improper connector
short-circuited harness wire of the intake air
temperature sensor circuit
Malfunction of the engine-ECU
NG
OK
NG
NG
OK
13B-11
contact, open circuit
Repair
Repair
or