DESCRIPTION
HINT:
When any of DTCs P0112 and P0113 are set, the ECM enters fail-safe mode. During fail-safe mode, the intake air temperature is estimated to be 20°C (68°F) by the ECM. Fail-safe mode continues until a pass condition is detected.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
P0112 |
A short in intake air temperature sensor circuit for 0.5 seconds (1 trip detection logic) |
|
P0113 |
An open in intake air temperature sensor circuit for 0.5 seconds (1 trip detection logic) |
|
HINT:
When any of these DTCs are set, check the intake air temperature by entering the following menus on the Techstream: Powertrain / Engine / Data List / Intake Air.
Temperature Displayed |
Malfunction |
---|---|
-40°C (-40°F) |
Open circuit |
Higher than 128°C (262°F) |
Short circuit |
MONITOR DESCRIPTION
The ECM monitors the sensor voltage and uses this value to calculate the intake air temperature. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the intake air temperature sensor and sets a DTC.
Example:
If the sensor output voltage is more than 4.91 V for 0.5 seconds or more, the ECM determines that there is an open in the intake air temperature sensor circuit, and sets DTC P0113. Conversely, if the output voltage is less than 0.18 V for 0.5 seconds or more, the ECM determines that there is a short in the sensor circuit, and sets DTC P0112.
MONITOR STRATEGY
Related DTCs |
P0112: Intake Air Temperature Sensor Range Check (Low voltage) P0113: Intake Air Temperature Sensor Range Check (High voltage) |
Required Sensors/Components (Main) |
Intake air temperature sensor |
Required Sensors/Components (Related) |
- |
Frequency of Operation |
Continuous |
Duration |
0.5 seconds |
MIL Operation |
Immediate |
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored |
None |
All of the following conditions are met |
- |
Battery voltage |
8 V or more |
Ignition switch |
ON |
Starter |
OFF |
TYPICAL MALFUNCTION THRESHOLDS
P0112
Intake air temperature sensor voltage [Intake air temperature] |
Less than 0.18 V [higher than 128°C (262°F)] |
Intake air temperature sensor voltage [Intake air temperature] |
More than 4.91 V [Below -55°C (-67°F)] |
COMPONENT OPERATING RANGE
Intake air temperature sensor voltage [Intake air temperature] |
0.18 V to 4.91 V [-55 to 128°C (-67 to 262°F)] |
CONFIRMATION DRIVING PATTERN
HINT:
Techstream Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
HINT:
HINT:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (INTAKE AIR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Intake Air.
(e) Read the value displayed on the Techstream.
Standard:
Same as actual intake air temperature.
Result |
Proceed to |
---|---|
-40°C (-40°F) |
A |
Higher than 128°C (262°F) |
B |
Same as actual intake air temperature |
C |
HINT:
B | ![]() |
GO TO STEP 4 |
C | ![]() |
CHECK FOR INTERMITTENT PROBLEMS |
|
2. |
READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) |
(a) Confirm good connection at the mass air flow meter.
*1 |
Mass Air Flow Meter |
*2 |
ECM |
*a |
Front view of wire harness connector (to Mass Air Flow Meter) |
- |
- |
(b) Disconnect the mass air flow meter connector.
(c) Connect terminals 1 (THA) and 2 (E2) of the mass air flow meter connector on the wire harness side.
(d) Connect the Techstream to the DLC3.
(e) Turn the ignition switch to ON.
(f) Turn the Techstream on.
(g) Enter the following menus: Powertrain / Engine / Data List / Intake Air.
(h) Read the value displayed on the Techstream.
Standard:
Higher than 128°C (262°F)
HINT:
Perform "Inspection After Repair" after replacing the mass air flow meter (See
page ).
OK | ![]() |
REPLACE MASS AIR FLOW METER |
|
3. |
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) |
(a) Disconnect the mass air flow meter connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Tester Connection |
Condition |
Specified Condition |
---|---|---|
B3-1 (THA) - B58-116 (THA) |
Always |
Below 1 Ω |
B3-2 (E2) - B58-93 (ETHA) |
Always |
Below 1 Ω |
OK | ![]() |
REPLACE ECM |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) |
4. |
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) |
(a) Disconnect the mass air flow meter connector. Text in Illustration
|
|
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Data List / Intake Air.
(f) Read the value displayed on the Techstream.
Standard:
-40°C (-40°F)
HINT:
Perform "Inspection After Repair" after replacing the mass air flow meter (See
page ).
OK | ![]() |
REPLACE MASS AIR FLOW METER |
|
5. |
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) |
(a) Disconnect the mass air flow meter connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Short):
Tester Connection |
Condition |
Specified Condition |
---|---|---|
B3-1 (THA) or B58-116 (THA) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE ECM |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) |
Open in Outside Luggage Compartment Electrical Key Antenna Circuit (B27A8)
DESCRIPTION
The certification ECU (smart key ECU assembly) generates a request signal and
sends it to the outside electrical key oscillator (for rear side). To detect the
key near the driver door, the outside electrical key oscillator (for rear side)
cr ...
Data Signal Circuit between Navigation Receiver Assembly and Stereo Jack Adapter
DESCRIPTION
The No. 1 stereo jack adapter assembly sends the sound data signal or image data
signal from a USB device to the navigation receiver assembly via this circuit.
WIRING DIAGRAM
PROCEDURE
1.
CHECK HARNESS AND CONNECTOR ( ...
Engine does not Start
DESCRIPTION
1. ENGINE START SYSTEM FUNCTION
(a) If the engine switch is pressed with the shift lever in P or N and the brake
pedal depressed, the power management control ECU determines that this is an engine
start request.
(b) The certification ECU (sm ...