Toyota Tundra (2015 year). Manual — part 1517
4.
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS)
(a) Disconnect the D7 MAF meter connector.
(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 and ECT
/ All Data / Intake Air.
(f) Read the value displayed on the Techstream.
Standard value:
-40°C (-40°F)
NG
GO TO STEP 5
OK
REPLACE MASS AIR FLOW METER
5.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)
(a) Disconnect the D7 MAF meter connector.
(b) Disconnect the D74 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D7-4 (THA) or D74-73 (THA) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0112,P0113...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000PF50XWX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0115,P0117,P0118; Engine Coolant Temperature
Circuit Malfunction; 2015 MY Tundra [08/2014 - ]
DTC
P0115
Engine Coolant Temperature Circuit Malfunction
DTC
P0117
Engine Coolant Temperature Circuit Low Input
DTC
P0118
Engine Coolant Temperature Circuit High Input
DESCRIPTION
A thermistor, whose resistance value varies according to the ECT, is built into the Engine Coolant Temperature
(ECT) sensor.
HINT:
When DTC P0115, P0117 or P0118 is set, the ECM enters fail-safe mode. During fail-safe mode, the ECT
is estimated to be 80°C (176°F) by the ECM. Fail-safe mode continues until a pass condition is detected.
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0115
Open or short in Engine Coolant Temperature (ECT) sensor
circuit for 0.5 seconds
(1 trip detection logic)
Open or short in ECT
sensor circuit
ECT sensor
ECM
P0117
Short in ECT sensor circuit for 0.5 seconds
(1 trip detection logic)
Short in ECT sensor
ECT sensor
ECM
P0118
Open in ECT sensor circuit for 0.5 seconds
(1 trip detection logic)
Open in ECT sensor circuit
ECT sensor
ECM
HINT:
TEMPERATURE DISPLAYED
MALFUNCTION
-40°C (-40°F)
Open circuit
140°C (284°F) or higher
Short circuit
MONITOR DESCRIPTION
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0115,P011...
The Engine Coolant Temperature (ECT) sensor is used to monitor the ECT. The ECT sensor has a thermistor
drops. These variations in resistance are reflected in the output voltage from the sensor. The ECM monitors
the sensor voltage and uses this value to calculate the ECT. When the sensor output voltage deviates from the
normal operating range, the ECM interprets this as a fault in the ECT sensor and stores 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 ECT sensor circuit, and stores DTC P0118. Conversely, if the voltage output is less than 0.14 V for
0.5 seconds or more, the ECM determines that there is a short in the sensor circuit, and stores DTC P0117.
If the malfunction is not repaired successfully, a DTC is stored 0.5 seconds after the engine is next started.
MONITOR STRATEGY
Related DTCs
P0115: ECT sensor range check (Fluctuating)
P0117: ECT sensor range check (Low voltage)
P0118: ECT sensor range check (High voltage)
Required Sensors/Components (Main)
ECT sensor
Required Sensors/Components (Related)
-
Duration
0.5 seconds
MIL Operation
Immediate
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs not stored
None
TYPICAL MALFUNCTION THRESHOLDS
P0115:
ECT sensor voltage
Less than 0.14 V, or more than 4.91 V
P0117:
ECT sensor voltage [ECT]
Less than 0.14 V [More than 135°C (275°F)]
P0118:
ECT sensor voltage [ECT]
More than 4.91 V [Less than -60°C (-76°F)]
COMPONENT OPERATING RANGE
ECT sensor voltage [ECT]
0.14 to 4.91 V [-60 to 135°C (-76 to 275°F)]
CONFIRMATION DRIVING PATTERN
Connect the Techstream to the DLC3.
1.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0115,P011...
Turn the ignition switch to ON and turn the Techstream on.
2.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
3.
Turn the ignition switch off and wait for at least 30 seconds.
4.
Turn the ignition switch to ON and turn the Techstream on.
5.
Wait 0.5 seconds or more.
6.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
7.
Read the pending DTC.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
8.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
9.
Input the DTC: P0115, P0117 or P0118.
10.
Check the DTC judgment result.
TESTER
DISPLAY
DESCRIPTION
NORMAL
DTC judgment completed
System normal
ABNORMAL
DTC judgment completed
System abnormal
INCOMPLETE
DTC judgment not completed
Perform driving pattern after confirming DTC enabling conditions
N/A
Unable to perform DTC judgment
11.
If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and
check for permanent DTCs
.
HINT:
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
12.
WIRING DIAGRAM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0115,P011...
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст