Toyota Tundra (2015 year). Manual — part 1687
OK
OK
NEXT
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
R6-4 (B) or R8-1 (FP) - Body ground
Always
10 kΩ or higher
R6-5 (E) or R8-2 (FP-) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
4.
CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM AND BODY GROUND)
(a) Disconnect the R7 fuel pump ECU connector.
(b) Disconnect the A24 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
R7-1 (FPC) - A24-52 (FPC)
Always
Below 1 Ω
R7-2 (DI) - A24-18 (DI)
Always
Below 1 Ω
R7-3 (E) - Body ground
Always
Below 1 Ω
R7-1 (FPC) or A24-52 (FPC) - Body ground
Always
10 kΩ or more
R7-2 (DI) or A24-18 (DI) - Body ground
Always
10 kΩ or more
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
5.
REPLACE FUEL PUMP ECU
(a) Replace the fuel pump ECU
.
6.
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
(a) Check the fuel pump operation.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump C...
OK
OK:
Malfunction has been repaired successfully.
NG
REPLACE ECM
OK
END
7.
INSPECT CIRCUIT OPENING RELAY (C/OPN)
(a) Remove the circuit opening relay (C/OPN) from the
engine room relay block
.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
TESTER
CONNECTION
CONDITION
SPECIFIED
CONDITION
3 - 5
When no battery voltage
applied to terminals 1 and 2
10 kΩ or higher
3 - 5
When battery voltage applied
to terminals 1 and 2
Below 1 Ω
NG
REPLACE CIRCUIT OPENING RELAY (C/OPN)
8.
INSPECT CIRCUIT OPENING RELAY (POWER SOURCE VOLTAGE)
(a) Remove the circuit opening relay (C/OPN) from the
engine room relay block
.
(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
C/OPN relay (1) - Body
ground
Ignition switch ON
11 to 14 V
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump C...
OK
OK
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
C/OPN relay (3) - Body
ground
Ignition switch ON
11 to 14 V
NG
GO TO STEP 15
9.
CHECK HARNESS AND CONNECTOR (CIRCUIT OPENING RELAY - ECM AND FUEL
PUMP ECU)
(a) Remove the circuit opening relay (C/OPN) from the engine room relay block
.
(b) Disconnect the A24 ECM connector.
(c) Disconnect the R7 fuel pump ECU connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
C/OPN relay (2) - A24-48 (FC)
Always
Below 1 Ω
C/OPN relay (5) - R7-4 (+B)
Always
Below 1 Ω
C/OPN relay (2) or A24-48 (FC) - Body ground
Always
10 kΩ or higher
C/OPN relay (5) or R7-4 (+B) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
10.
CHECK HARNESS AND CONNECTOR (FUEL PUMP - FUEL PUMP ECU)
(a) Disconnect the R6 fuel pump connector.
(b) Disconnect the R8 fuel pump ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump C...
OK
OK
OK
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
R6-4 (B) - R8-1 (FP)
Always
Below 1 Ω
R6-5 (E) - R8-2 (FP-)
Always
Below 1 Ω
R6-4 (B) or R8-1 (FP) - Body ground
Always
10 kΩ or higher
R6-5 (E) or R8-2 (FP-) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
11.
INSPECT FUEL PUMP
(a) Inspect the fuel pump
.
NG
REPLACE FUEL PUMP
12.
CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM AND BODY GROUND)
(a) Disconnect the R7 fuel pump ECU connector.
(b) Disconnect the A24 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
R7-1 (FPC) - A24-52 (FPC)
Always
Below 1 Ω
R7-2 (DI) - A24-18 (DI)
Always
Below 1 Ω
R7-3 (E) - Body ground
Always
Below 1 Ω
R7-1 (FPC) or A24-52 (FPC) - Body ground
Always
10 kΩ or more
R7-2 (DI) or A24-18 (DI) - Body ground
Always
10 kΩ or more
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump C...
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст