Toyota Tundra (2015 year). Manual — part 1614
OK
OK
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D74-76 (THW) - D28-2
Always
Below 1 Ω
D74-98 (ETHA) - D28-1
Always
Below 1 Ω
D74-76 (THW) or D28-2 - Body ground
Always
10 kΩ or higher
HINT:
REPAIR OR REPLACE HARNESS OR CONNECTOR
63.
INSPECT MASS AIR FLOW METER (INTAKE AIR TEMPERATURE SENSOR)
(a) Inspect the mass air flow meter
.
HINT:
If the intake air temperature sent to the ECM is higher than the standard due to the mass air flow meter
(intake air temperature sensor) malfunctioning, the ignition timing may become delayed.
NG
REPLACE MASS AIR FLOW METER
64.
READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Start the engine and warm it up until the engine coolant temperature stabilizes.
HINT:
The A/C switch and all accessory switches should be off.
(c) Idle the engine.
Result
FREEZE FRAME DATA ITEM FOR DTC P1605
PROCEED TO
IGN ADVANCE
KNOCK CORRECT LEARN VALUE
A
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P160...
FREEZE FRAME DATA ITEM FOR DTC P1605
PROCEED TO
IGN ADVANCE
KNOCK CORRECT LEARN VALUE
3° or more
B
HINT:
B
END
A
CHECK KNOCK SENSOR CIRCUIT
65.
CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE)
(a) Disconnect the fuel injector assembly connectors.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
CYLINDER
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
No. 1
H1-2 - Body ground
Ignition switch ON
11 to 14 V
No. 2
F1-2 - Body ground
Ignition switch ON
11 to 14 V
No. 3
H2-2 - Body ground
Ignition switch ON
11 to 14 V
No. 4
F2-2 - Body ground
Ignition switch ON
11 to 14 V
No. 5
H3-2 - Body ground
Ignition switch ON
11 to 14 V
No. 6
F3-2 - Body ground
Ignition switch ON
11 to 14 V
No. 7
H4-2 - Body ground
Ignition switch ON
11 to 14 V
No. 8
F4-2 - Body ground
Ignition switch ON
11 to 14 V
HINT:
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P160...
OK
OK
REPAIR FUEL INJECTOR POWER SOURCE
CIRCUIT
66.
CHECK IGNITION SYSTEM
(a) Perform ignition system On-vehicle Inspection
.
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS,
COMPONENT AND AREA
67.
CHECK 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
SUSPECTED
AREA
PROCEED
TO
A/C SIGNAL
AIR CONDITIONER FB VAL
POWER
STEERING
SIGNAL
A/C Signal display does
not change from OFF*
-
Does not change
from OFF
-
A
Changes from
OFF to ON
Power steering
system
A/C Signal display
changes from OFF to
ON*
Value displayed for Air
Conditioner FB Val does not
increase
Changes from
OFF to ON
Does not change
from OFF
-
Value displayed for Air
Conditioner FB Val increases
-
A/C system
B
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P160...
A
HINT:
CHECK AIR CONDITIONING SYSTEM
68.
CHECK 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
SUSPECTED
AREA
PROCEED
TO
ELECTRICAL LOAD SIGNAL
OR ELECTRIC LOAD
FEEDBACK VAL
ELECTRIC LOAD
FEEDBACK VAL
DIFFERENCE
BETWEEN ENGINE
SPEED AND SPD
(NT)
VEHICLE
SPEED
Electrical Load Signal display
changes from OFF to ON*3,
or value displayed for Electric
Load Feedback Val increases*
Value displayed
for Electric Load
Val changes
-
-
Electrical load
signal circuit
C
Value displayed
for Electric Load
Val does not
change
data is less than 100
rpm
Less than
30 km/h
A/T system
B
30 km/h
or more
-
A
rpm or more
-
-
A
Electrical Load Signal display
does not change from OFF, or
value displayed for Electric
Load Feedback Val does not
increase
-
data is less than 100
rpm
Less than
30 km/h
A/T system
B
30 km/h
or more
-
A
rpm or more
-
-
A
HINT:
*: If the Electrical Load Signal display changes from OFF to ON, or the "Electric Load Feedback Val"
increases, it probably is a malfunction due to a change in electrical load. Check the generator and the
continuity and connections between the generator and ECM.
The normal value for the ISC learned value is engine displacement (liters) x 0.9.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P160...
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