RM3660EC _51 Engine / Hybrid System _080778 8ZR-FXE ENGINE CONTROL _0393982 SFI SYSTEM C

8ZR-FXE ENGINE CONTROL  SFI SYSTEM  P011015  Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open  


DESCRIPTION

Refer to DTC P011011.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>P011011

HINT:

When DTC P011015 is stored, 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. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P011015 Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open The intake air temperature sensor output voltage is higher than 3.76 V for 0.5 seconds or more (1 trip detection logic).
·

Open or short in intake air temperature sensor circuit

·

Mass air flow meter sub-assembly (intake air temperature sensor)

·

ECM


Comes on DTC stored SAE Code: P0113

HINT:

When this DTC is output, check the intake air temperature in the Data List. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature.

DTC No. Intake Air Temperature Malfunction
P011015 Higher than 123°C (253°F)
·

Short to +B in THA circuit

·

Open in THA circuit

·

Open in ETHA circuit



If the Data List value is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


MONITOR DESCRIPTION

When the power switch is turned on (IG) and the output voltage of the intake air temperature sensor is higher than 3.76 V for 0.5 seconds or more, the ECM determines that the intake air temperature sensor circuit is malfunctioning and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Frequency of Operation Continuous

CAUTION / NOTICE / HINT

NOTICE:
·

Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>VEHICLE CONTROL HISTORY (RoB)

(Select Powertrain in Health Check and then check the time stamp data.)

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>VEHICLE CONTROL HISTORY (RoB)



HINT:

Read Freeze Frame Data using the GTS. 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.CHECK HARNESS AND CONNECTOR
A456865C08
0.271,1.052 0.688,1.302 0.417,0.25 0.875,1.604 1.292,1.188 true 1.417,1.781 1.573,1.208 true 2.438,1.74 2.052,1.208 true 0.125,0.125 0.438,0.323 0.313,0.198 10 false *a 0.344,1.094 0.74,1.292 0.396,0.198 10 false C26 0.719,1.625 1.031,1.823 0.313,0.198 10 false THA 1.271,1.802 1.646,2.042 0.375,0.24 10 false E2G 2.323,1.76 2.635,1.958 0.313,0.198 10 false VCC
*a Front view of wire harness connector
(to Mass Air Flow Meter Sub-assembly)


HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.


a.

Disconnect the mass air flow meter sub-assembly connector.


b.

Turn the ignition switch to ON.


c.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
C26-4 (VCC) - C26-2 (E2G) Ignition switch ON 4.8 to 5.2 V
C26-1 (THA) - C26-2 (E2G) Ignition switch ON 4.8 to 5.2 V



d.

Turn the ignition switch off and wait for at least 30 seconds.


e.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
C26-2 (E2G) - Body ground Ignition switch off Below 1 Ω
C26-4 (VCC) - C26-1 (THA) Always 2.565 to 2.835 kΩ


HINT:

Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>MASS AIR FLOW METER>REMOVAL


NG

2.CHECK HARNESS AND CONNECTOR (INTAKE AIR TEMPERATURE SENSOR - ECM)
2.CHECK HARNESS AND CONNECTOR (INTAKE AIR TEMPERATURE SENSOR - ECM)
a.

Disconnect the mass air flow meter sub-assembly connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
C26-1 (THA) - C155-139 (THA) Always Below 1 Ω
C26-2 (E2G) - C155-107 (E2G) Always Below 1 Ω
C26-1 (THA) or C155-139 (THA) - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR