XJR (X308) V8-4.0L SC (AJ26) (1998)
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Intake Air Temperature Sensor: Pinpoint Tests
Pinpoint Test X: P0111, P0112
Pinpoint X Index
X1: RETRIEVE DTCS
X2: AIR INTAKE SYSTEM CHECK
X3: CHECK IAT SENSOR RANGE
X4: CHECK CONTINUITY HARNESS
X5: CHECK CONTINUITY HARNESS
X6: END
X1 RETRIEVE DTCS
Note: Battery and or ECM disconnection prior to scanning will erase all data, ensure that the correct DTC is present.
2. Connect scan tool
3. Record DTC(s), freeze frame data
GO to X2 for P0111
GO to X3 for P0112
X2 AIR INTAKE SYSTEM CHECK
2. Check air intake system
Air cleaner clear free from obstruction?
Air cleaner to air meter seal OK?
Air meter to throttle body seal OK?
Engine breather to inlet duct OK?
Yes: Go to X3
No: Rectify the fault(s) and test the system for normal operation.
X3 CHECK IAT SENSOR RANGE
Note: Use a refrigerator, freezer or freeze spray so that the operation of the sensor can be checked at temperatures below the ambient test
temperature.