Toyota Tundra (2015 year). Manual — part 1978
A
A
FREEZE FRAME DATA ITEM
FOR DTC P1605
RESULT
SUSPECTED AREA
PROCEED
TO
Calculate Load
Mass air flow meter
A
AFS Voltage B1S1
Below 3.3 V*2
Air fuel ratio
sensor
Harness and
connector
B
Both freeze frame data items
listed above
Values are other than above
-
C
HINT:
GO TO STEP 43
C
GO TO STEP 46
40.
CHECK MASS AIR FLOW METER
(a) Remove the mass airflow meter.
RESULT
PROCEED TO
Visible foreign matter is not present
A
Visible foreign matter is present
B
HINT:
Perform "Inspection After Repair" after replacing the mass air flow meter
.
B
REPLACE MASS AIR FLOW METER
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P1605;...
OK
OK
41.
CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER)
(a) Check the harnesses and connectors, referring to DTC P0102 inspection procedure
.
HINT:
REPAIR OR REPLACE HARNESS OR CONNECTOR
42.
PERFORM DRIVE TEST
(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.
DATA LIST
SPECIFIED CONDITION
Calculate Load
Perform "Inspection After Repair" after replacing the mass air flow meter
.
NG
REPLACE MASS AIR FLOW METER
43.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME
FOR A/F SENSOR)
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P1605;...
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Start the engine, turn off all accessory switches and warm up the engine until the engine
coolant temperature stabilizes.
(d) Idle the engine.
(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection
Volume for A/F Sensor.
(f) Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel
injection volume.
Standard:
TECHSTREAM DISPLAY
SPECIFIED CONDITION
Control the Injection Volume for A/F Sensor
(+12.5%)
Air fuel ratio sensor output voltage is below 3.1 V
Control the Injection Volume for A/F Sensor (-12.5%)
Air fuel ratio sensor output voltage is higher than 3.4
V
Result
RESULT
PROCEED TO
Abnormal
A
Normal
B
HINT:
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1603,P1605;...
A
OK
OK
B
GO TO STEP 46
44.
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
45.
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
46.
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;...
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