Toyota Tundra (2015 year). Manual — part 1975
A
OK
OK
B
GO TO STEP 18
16.
CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR POWER SOURCE)
(a) Check the harnesses and connectors, referring to DTC P0031 inspection procedure
.
HINT:
REPAIR AIR FUEL RATIO SENSOR POWER
SOURCE CIRCUIT
17.
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)
(a) Check the harnesses and connectors, referring to DTC P0031 inspection procedure
.
HINT:
REPAIR OR REPLACE HARNESS OR CONNECTOR
18.
READ FREEZE FRAME DATA
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which
were present when the DTC was stored
.
Result
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P1605;...
A
FREEZE FRAME DATA ITEM FOR DTC P1605
RESULT
PROCEED
TO
Initial Engine Coolant Temp, Ambient Temp for
A/C, Initial Intake Air Temp
Difference in temperature between each
item is less than 10°C*1
A
Difference in temperature between each
item is 10°C or more*2
B
HINT:
*1: A long time had elapsed after stopping the engine.
*2: A long time had not elapsed after stopping the engine.
B
GO TO STEP 21
19.
READ FREEZE FRAME DATA
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which
were present when the DTC was stored
.
Result
FREEZE FRAME DATA ITEM FOR DTC P1605
RESULT
SUSPECTED AREA
PROCEED
TO
Initial Engine Coolant Temp, Coolant Temp,
Engine Run Time
Range
A
Engine coolant temperature
sensor
Thermostat
A
Range
B
Engine coolant temperature sensor
B
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P1605;...
A
FREEZE FRAME DATA ITEM FOR DTC P1605
RESULT
SUSPECTED AREA
PROCEED
TO
Range
C
-
C
HINT:
This step is not directly related to engine stall.
B
GO TO STEP 22
C
GO TO STEP 24
20.
INSPECT THERMOSTAT
HINT:
For the thermostat inspection, refer to the following procedures
.
Result
RESULT
PROCEED TO
Abnormal
A
Normal
B
B
GO TO STEP 22
A
REPLACE THERMOSTAT
21.
READ FREEZE FRAME DATA
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which
were present when the DTC was stored
.
Result
FREEZE FRAME DATA
ITEM FOR DTC P1605
RESULT
SUSPECTED AREA
PROCEED
TO
Coolant Temp
120°C or higher
Engine coolant
temperature sensor
A
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P1605;...
A
A
FREEZE FRAME DATA
ITEM FOR DTC P1605
RESULT
SUSPECTED AREA
PROCEED
TO
Coolant Temp, Ambient
Temp for A/C
Engine coolant temperature is lower than
outside temperature by 15°C or more
Engine coolant
temperature sensor
Both freeze frame data
items listed above
Values are other than above
-
B
B
GO TO STEP 24
22.
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
HINT:
For the engine coolant temperature sensor inspection, refer to the following procedures
.
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor
.
Result
RESULT
PROCEED TO
Normal
A
Abnormal
B
B
REPLACE ENGINE COOLANT TEMPERATURE
SENSOR
23.
CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE
SENSOR)
(a) Disconnect the ECM connector.
(b) Disconnect the engine coolant temperature sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D74-76 (THW) - D28-2
Always
Below 1 Ω
D74-98 (ETHA) - D28-1
Always
Below 1 Ω
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P1605;...
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