Toyota Tundra (2015 year). Manual — part 1318
A
(a) Perform troubleshooting in accordance with the table below.
Result
RESULT
PROCEED TO
MIL remains ON
A
MIL does not illuminate
B
B
GO TO STEP 5
2.
CHECK WHETHER MIL TURNS OFF
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(e) Check if any DTCs have been stored. Note down any DTCs.
(f) Clear DTCs
.
(g) Check if the MIL goes off.
OK:
MIL goes off.
NG
GO TO STEP 3
OK
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
3.
CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: MIL Circuit; ...
(a) Disconnect the ECM connector.
(b) Turn the ignition switch to ON.
(c) Check that the MIL is not illuminated.
OK:
MIL is not illuminated.
NG
GO TO STEP 4
OK
REPLACE ECM
4.
CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)
(a) Disconnect the ECM connector.
(b) Disconnect the combination meter connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
A24-24 (W) or J28-10 (CHK) -
Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE COMBINATION METER ASSEMBLY
5.
CHECK THAT MIL IS ILLUMINATED
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: MIL Circuit; ...
A
(a) Check if the MIL is illuminated when the ignition switch is turned to ON.
OK:
MIL should be illuminated.
NG
GO TO STEP 6
OK
END
6.
CHECK THAT ENGINE STARTS
(a) Turn the ignition switch to ON.
(b) Start the engine.
Result
RESULT
PROCEED TO
Engine starts
A
Engine does not start*
B
HINT:
*: The Techstream cannot communicate with the ECM.
B
GO TO VC OUTPUT CIRCUIT
7.
CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: MIL Circuit; ...
(a) Disconnect the ECM connector.
(b) Disconnect the combination meter connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A24-24 (W) - J28-10 (CHK)
Always
Below 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE COMBINATION METER ASSEMBLY
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: MIL Circuit; ...
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