Nissan Maxima Service and Repair Manual: P0112, P0113 IAT sensor
Description
The intake air temperature sensor is built-into the mass air flow sensor (1). The sensor detects intake air temperature and transmits a signal to the ECM.
The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the rise in temperature.
<Reference data>
*: These data are reference values and are measured between ECM terminals 50 (Intake air temperature sensor) and 56 (Sensor ground).
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
- Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Turn ignition switch OFF and wait at least 10 seconds.
2.PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON and wait at least 5 seconds.
- Check 1st trip DTC.
Diagnosis Procedure
Regarding Wiring Diagram information
1.CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- Check ground connection E9.
2.CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
- Disconnect mass air flow sensor (with intake air temperature sensor) harness connector.
- Turn ignition switch ON.
- Check the voltage between mass air flow sensor harness connector and ground.
3.CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check harness continuity between mass air flow sensor harness connector and ECM harness connector
- Also check harness for short to ground and short to power.
4.CHECK INTAKE AIR TEMPERATURE SENSOR
5.CHECK INTERMITTENT INCIDENT
Component Inspection
1.CHECK INTAKE AIR TEMPERATURE SENSOR
- Turn ignition switch OFF.
- Disconnect mass air flow sensor harness connector.
- Check resistance between mass air flow sensor terminals as per the following.
P0111 IAT sensor
Description
The intake air temperature sensor is built-into the mass air flow sensor
(1). The sensor detects intake air temperature and transmits a
signal to the ECM.
The temperature sensi ...
P0116 ECT sensor
Description
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM a ...
Other materials:
U1010 control unit (CAN)
Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent malfunction
detection ability.
Many electronic control units are equipped onto a vehicle, an ...
P014C, P014D, P014E, P014F, P015A, P015B, P015C, P015D A/F sensor
1
Description
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor.
The sensor element of the A/F sensor 1 is composed an electrode
layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean ...
Diagnosis and repair workflow
Repair Work Flow
WORK FLOW
DETAILED FLOW
1.CUSTOMER INFORMATION
Interview the customer to obtain detailed information about the symptom.
2.PRELIMINARY CHECK
Perform preliminary check
3.SELF-DIAGNOSIS
Perform SELF-DIAGNOSIS.
4.SYMPTOM
Check for symptoms.
5.MALFUNCTIONING PARTS
Repair or ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
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