RM3660EC _51 Engine / Hybrid System _080777 NR Series ENGINE CONTROL _0393969 SFI SYSTEM C

NR Series ENGINE CONTROL  SFI SYSTEM  P011515  Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open  


DESCRIPTION

Refer to DTC P011511.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>P011511

HINT:

When DTC P011515 is stored, the ECM enters fail-safe mode. During fail-safe mode, the engine coolant temperature is estimated to be 80°C (176°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
P011515 Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open Diagnosis Condition:
·

Ignition switch ON


Abnormal condition:
·

The engine coolant temperature sensor output voltage is higher than 4.91 V.


Malfunction Time:
·

0.5 seconds or more


Trip logic:
·

1 trip detection logic


Detection Conditions:
·

Continuous


Sensors/components used for detection:
·

Engine coolant temperature sensor


·

Open or short in engine coolant temperature sensor circuit

·

Engine coolant temperature sensor

·

ECM


Comes on DTC stored SAE Code:
P0118

HINT:

When this DTC is output, check the engine coolant temperature in the Data List. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

DTC No. Coolant Temperature Malfunction
P011515 -40°C (-40°F)
·

Short to +B in THW circuit

·

Open in THW circuit

·

Open in ETHW circuit



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

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


MONITOR DESCRIPTION

When the ignition switch is turned to ON and the output voltage of the engine coolant temperature sensor is higher than 4.91 V for 0.5 seconds or more, the ECM determines that the engine coolant temperature sensor circuit is malfunctioning and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Frequency of Operation Continuous

CAUTION / NOTICE / HINT

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 TERMINAL VOLTAGE (ENGINE COOLANT TEMPERATURE SENSOR)
A433900C03
0.635,0.958 0.979,1.219 0.344,0.26 0.208,0.198 0.521,0.396 0.313,0.198 10 false *a 0.729,1.01 1.042,1.208 0.313,0.198 10 false F8
*a Front view of wire harness connector
(to Engine Coolant Temperature Sensor)


a.

Disconnect the engine coolant temperature sensor 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
F8-1 - Body ground Ignition switch ON 0 to 5.5 V



Result:
Proceed to
OK
NG



OK

2.READ VALUE USING GTS (COOLANT TEMPERATURE)

NG

4.CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
2.READ VALUE USING GTS (COOLANT TEMPERATURE)
A436608C04
4.854,1.271 5.146,1.469 0.292,0.198 1.656,1.833 1.969,2.031 0.313,0.198 10 false *1 3.313,1.844 3.625,2.042 0.313,0.198 10 false *2 3.031,1.01 3.49,1.208 0.458,0.198 10 false THW 3.031,1.302 3.646,1.5 0.615,0.198 10 false ETHW 4.875,0.708 5.188,0.906 0.313,0.198 10 false *a 4.927,1.292 5.24,1.49 0.313,0.198 10 false F8
*1 Engine Coolant Temperature Sensor *2 ECM
*a Front view of wire harness connector
(to Engine Coolant Temperature Sensor) 		- -


a.

Disconnect the engine coolant temperature sensor connector.


b.

Connect terminals 1 and 2 of the engine coolant temperature sensor connector on the wire harness side.


c.

Connect the GTS to the DLC3.


d.

Turn the ignition switch to ON.


e.

Turn the GTS on.


f.

Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

g.

Read the value displayed on the GTS.

OK:
GTS Display Specified Condition
Coolant Temperature 140°C (284°F)



HINT:

Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION


Result:
Proceed to
OK
NG



OK

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ENGINE COOLANT TEMPERATURE SENSOR>REMOVAL


NG

3.CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
3.CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
a.

Disconnect the engine coolant temperature sensor 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
F8-1 - C78-104 (THW) Always Below 1 Ω
F8-2 - C78-105 (ETHW) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
a.

Disconnect the engine coolant temperature sensor 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
F8-1 - C78-104 (THW) - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR