Toyota Tundra (2015 year). Manual — part 1119
OK
2.
INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE)
(a) Disconnect the mass air flow meter 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
D7-1 (+B) - Body
ground
Ignition switch ON
11 to 14 V
NG
GO TO STEP 7
3.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)
(a) Disconnect the mass air flow meter connector.
(b) Disconnect the 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
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103;...
OK
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
4.
INSPECT MASS AIR FLOW METER
(a) Inspect the mass air flow meter, referring to the On-vehicle inspection for mass air flow meter
.
(b) Inspect the mass air flow meter, referring to the inspection for mass air flow meter
.
(2) Turn the ignition switch to ON.
(3) Turn the Techstream on.
(4) Enter the following menus: Powertrain / Engine and ECT / Data List / MAF.
(5) Start the engine.
(6) Check that the MAF value changes when the engine is raced.
OK:
The reading changes.
HINT:
Perform "Inspection After Repair" after replacing the mass air flow meter
.
NG
REPLACE MASS AIR FLOW METER
OK
REPLACE ECM
5.
CHECK HARNESS AND CONNECTOR (SENSOR GROUND)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103;...
(a) Disconnect the mass air flow meter connector.
(b) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D7-2 (E2G) - Body ground
Always
Below 1 Ω
HINT:
Perform "Inspection After Repair" after replacing the mass air
flow meter
.
NG
GO TO STEP 6
OK
REPLACE MASS AIR FLOW METER
6.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)
(a) Disconnect the mass air flow meter connector.
(b) Disconnect the 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
OK
REPLACE ECM
7.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - INTEGRATION RELAY)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103;...
(a) Disconnect the mass air flow meter connector.
(b) Remove the integration relay from the engine room relay block.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D7-1 (+B) - 1B-4
Always
Below 1 Ω
D7-1 (+B) or 1B-4 - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK ECM POWER SOURCE CIRCUIT
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103;...
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