Toyota Tundra (2015 year). Manual — part 1543

OK

OK

26.

INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50,
#60, #70 AND/OR #80 VOLTAGE)

(a) Disconnect the D74 ECM connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the

table below.

Standard voltage:

TESTER CONNECTION

SWITCH

CONDITION

SPECIFIED

CONDITION

D74-86 (#10) - D74-43

(E01)

Ignition switch ON

11 to 14 V

D74-109 (#20) - D74-43

(E01)

Ignition switch ON

11 to 14 V

D74-85 (#30) - D74-43

(E01)

Ignition switch ON

11 to 14 V

D74-108 (#40) - D74-43

(E01)

Ignition switch ON

11 to 14 V

D74-84 (#50) - D74-43

(E01)

Ignition switch ON

11 to 14 V

D74-107 (#60) - D74-43

(E01)

Ignition switch ON

11 to 14 V

D74-83 (#70) - D74-43

(E01)

Ignition switch ON

11 to 14 V

D74-106 (#80) - D74-43

(E01)

Ignition switch ON

11 to 14 V

NG

GO TO FUEL INJECTOR CIRCUIT

27.

CHECK FUEL INJECTOR OF MISFIRING CYLINDER

(a) Check the fuel injector injection [whether fuel volume is high or low, and whether injection

pattern is poor]

.

NG

REPLACE FUEL INJECTOR ASSEMBLY

3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P030...

NEXT

28.

CHECK HARNESS AND CONNECTOR

.

HINT:

Repair any problems.

29.

CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs

.

(e) Turn the ignition switch off.

(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 Confirmation Driving

Pattern.

(i) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

(j) Input the DTC: P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308.

(k) Check the DTC judgment result.

Result

DISPLAY (DTC OUTPUT)

PROCEED TO

ABNORMAL

(P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 output)

A

NORMAL

(No DTC output)

B

B

END

3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P030...

A

OK

NEXT

30.

CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)

(a) Disconnect the D7 MAF meter 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

D7-3 (VG) - D74-74 (VG)

Always

Below 1 Ω

D7-2 (E2G) - D74-75 (E2G)

Always

Below 1 Ω

D7-3 (VG) or D74-74 (VG) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

31.

REPLACE MASS AIR FLOW METER

(a) Replace the mass air flow meter

.

HINT:

32.

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 the DTCs

.

(e) Turn the ignition switch off.

3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P030...

(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 Confirmation Driving

Pattern.

(i) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

(j) Input the DTC: P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308.

(k) Check the DTC judgment result.

Result

DISPLAY (DTC OUTPUT)

PROCEED TO

NORMAL

(No DTC output)

A

ABNORMAL

(P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 output)

B

B

REPLACE ECM

A

END

33.

CHECK FUEL LINE

(a) Check the fuel lines for leaks or blockage.

NG

REPAIR OR REPLACE FUEL LINE

OK

REPLACE FUEL PUMP

3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P030...