Toyota Tundra (2015 year). Manual — part 1888
OK
2.
CHECK AIR INDUCTION SYSTEM
(a) Check the air induction system for vacuum leakage
.
OK:
No leakage from air induction system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the air induction system
.
NG
REPAIR OR REPLACE AIR INDUCTION SYSTEM
3.
CHECK PCV HOSE CONNECTIONS
(a) Check the PCV hose connections.
OK:
PCV hose is connected correctly and is not damaged.
HINT:
Perform "Inspection After Repair" after replacing the mass air flow meter
.
NG
REPAIR OR REPLACE PCV HOSE
OK
REPLACE MASS AIR FLOW METER
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0101; Mass A...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000U5B0SPX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103; Mass or Volume Air Flow Circuit Low
Input; 2015 MY Tundra [08/2014 - ]
DTC
P0102
Mass or Volume Air Flow Circuit Low Input
DTC
P0103
Mass or Volume Air Flow Circuit High Input
DESCRIPTION
ratio.
incoming air cools both the wire and an internal thermistor, affecting their resistance. To maintain a constant
current value, the ECM varies the voltage applied to the wire and internal thermistor. The voltage level is
proportional to the airflow through the sensor, and the ECM uses it to calculate the intake air volume.
The circuit is constructed so that the platinum hot wire and the cold film element create a bridge circuit, and
HINT:
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103...
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
P0102
MAF meter voltage less than 0.2 V for 3 seconds
(1 trip detection logic: Engine speed is less than 4000
rpm)
(2 trip detection logic: Engine speed is 4000 rpm or
more).
Open or short in MAF meter
circuit
MAF meter
ECM
P0103
MAF meter voltage more than 4.9 V for 3 seconds
(1 trip detection logic: Engine speed is less than 4000
rpm)
(2 trip detection logic: Engine speed is 4000 rpm or
more).
Open or short in MAF meter
circuit
MAF meter
ECM
HINT:
MASS AIR FLOW RATE (GM/SEC)
MALFUNCTION
Approximately 0.0
Open in Mass Air Flow (MAF) meter power source circuit
Open or short in VG circuit
160.0 or more
Open in E2G circuit
MONITOR DESCRIPTION
If there is a defect in the MAF meter or an open or short circuit, the voltage level deviates from the normal
operating range. The ECM interprets this deviation as a malfunction in the MAF meter and sets a DTC.
Example:
When the sensor output voltage remains at less than 0.2 V, or more than 4.9 V for more than 3 seconds, the
ECM sets a DTC.
If the malfunction is not repaired successfully, a DTC is set 3 seconds after the engine is next started.
MONITOR STRATEGY
Related DTCs
P0102: MAF meter range check (Low voltage)
P0103: MAF meter range check (High voltage)
Required Sensors/Components (Main)
MAF meter
Required Sensors/Components (Related)
Crankshaft position sensor
Duration
3 seconds
MIL Operation
Immediate: Engine speed less than 4000 rpm
2 driving cycles: Engine speed 4000 rpm or more
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs not stored
None
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103...
TYPICAL MALFUNCTION THRESHOLDS
P0102:
MAF meter voltage
Less than 0.2 V
P0103:
MAF meter voltage
More than 4.9 V
COMPONENT OPERATING RANGE
MAF meter voltage
0.2 V or more. and 4.9 V or less
CONFIRMATION DRIVING PATTERN
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
3.
Turn the ignition switch off and wait for at least 30 seconds.
4.
Turn the ignition switch to ON and turn the Techstream on [A].
5.
Start the engine.
6.
Idle the engine for 5 seconds [B].
7.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
8.
Read the Pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
9.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
11.
Read the pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
12.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0102,P0103...
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