Toyota Tundra (2015 year). Manual — part 1671
OK
OK
NEXT
12.
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)
(a) Disconnect the D33 or D34 A/F sensor 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
D33-1 (HA1A) - D74-22 (HA1A)
Always
Below 1 Ω
D33-3 (A1A+) - D74-126 (A1A+)
Always
Below 1 Ω
D33-4 (A1A-) - D74-125 (A1A-)
Always
Below 1 Ω
D34-1 (HA2A) - D74-20 (HA2A)
Always
Below 1 Ω
D34-3 (A2A+) - D74-103 (A2A+)
Always
Below 1 Ω
D34-4 (A2A-) - D74-102 (A2A-)
Always
Below 1 Ω
D33-1 (HA1A) or D74-22 (HA1A) - Body ground
Always
10 kΩ or higher
D33-3 (A1A+) or D74-126 (A1A+) - Body ground
Always
10 kΩ or higher
D33-4 (A1A-) or D74-125 (A1A-) - Body ground
Always
10 kΩ or higher
D34-1 (HA2A) or D74-20 (HA2A) - Body ground
Always
10 kΩ or higher
D34-3 (A2A+) or D74-103 (A2A+) - Body ground
Always
10 kΩ or higher
D34-4 (A2A-) or D74-102 (A2A-) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
13.
REPLACE AIR FUEL RATIO SENSOR
(a) Replace the air fuel ratio sensor
.
14.
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injectio...
A
NEXT
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs
.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON and turn the Techstream on.
(g) Start the engine and warm it up.
(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving
(j) Read DTCs.
Result
RESULT
PROCEED TO
DTC that was output before coming to this fuel injection system inspection procedure is output
A
DTC is not output
B
B
END
15.
CHECK HARNESS AND CONNECTOR
.
HINT:
Repair any problems.
16.
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injectio...
A
OK
NEXT
(d) Clear DTCs
.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON and turn the Techstream on.
(g) Start the engine and warm it up.
(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving
(j) Read DTCs.
Result
RESULT
PROCEED TO
DTC that was output before coming to this fuel injection system inspection procedure is output
A
DTC is not output
B
B
END
17.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
18.
REPLACE MASS AIR FLOW METER
(a) Replace the mass air flow meter
.
HINT:
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injectio...
OK
19.
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs
.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON and turn the Techstream on.
(g) Start the engine and warm it up.
(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving
(j) Read DTCs.
Result
RESULT
PROCEED TO
DTC is not output
A
DTC that was output before coming to this fuel injection system inspection procedure is output
B
B
REPLACE ECM
A
END
20.
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - INTEGRATION
RELAY)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
21.
INSPECT INTEGRATION RELAY (A/F)
NG
REPLACE INTEGRATION RELAY
OK
CHECK ECM POWER SOURCE CIRCUIT
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injectio...
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