Isuzu 2000 Trooper Workshop Manual page 1024

Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart:
2. Verifies that the fault is present.
3. If DTC P0113 can be repeated only by duplicating
the Failure Records conditions, refer to the
"Temperature vs. Resistance Values" table. The
table may be used to test the IAT sensor at various
temperatures to evaluate the possibility of a
"shifted" sensor that may be open above or below a
certain temperature. If this is the case, replace the
IAT sensor. If the IAT sensor appears to be OK, the
fault is intermittent; refer to Diagnostic Aids .
DTC P0113 –IAT Sensor Circuit High Voltage
Step
1 Was the "On-Board Diagnostic (OBD) System Check"
performed?
2 Ignition "ON," engine "OFF." Observe the "Intake Air
Temp" display on the Tech 2.
Is the "Intake Air Temp" below the specified value?
3 1. Ignition "ON," engine "OFF."
2. Review and record Tech 2 Failure Records data
parameters.
3. Operate the vehicle within Failure Records
conditions as noted.
4. Using a Tech 2, monitor "DTC" info for DTC P0113.
Does the Tech 2 indicate DTC P0113 failed?
4 1. Ignition "OFF."
2. Disconnect the IAT sensor electrical connector.
3. Jumper the IAT signal circuit and the sensor ground
circuit together at the IAT sensor harness
connector.
4. Ignition "ON."
5. Observe the "Intake Air Temp" display on the Tech
2.
Is the "Intake Air Temp" at the specified value?
5 1. Jumper the IAT signal circuit at the IAT sensor
harness connector to chassis ground.
2. Observe the "Intake Air Temp" display on the Tech
2.
Is the "Intake Air Temp" at the specified value?
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Action
Intake Air Temperature Sensor
°C
Temperature vs. Resistance Values
(approximate)
100
80
60
45
35
25
15
5
–5
–15
–30
–40
Value(s)
— Go to Step 2
–38°C
(–36°F) Go to Step 4
Refer to Test
— Description
140°C
(284°F) Go to Step 6
140°C
(284°F) Go to Step 7
6E–155
°F
OHMS
212 177
176 332
140 667
113 1188
95 1802
77 2796
59 4450
41 7280
23 12300
5 21450
–22 52700
–40 100700
Yes No
Go to OBD
System
Check
Go to Step 3
Refer to
Diagnostic
Aids
Go to Step 5
Go to Step 8