Toyota Tundra (2015 year). Manual — part 1584
A
OK
NEXT
17.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
18.
REPLACE MASS AIR FLOW METER
(a) Replace the mass air flow meter
.
HINT:
19.
CHECK WHETHER DTC OUTPUT RECURS (DTC P050B)
NOTICE:
For this operation, the engine must be cold (the same level as the engine coolant temperature recorded
in the freeze frame data).
(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 and wait for at least 30 seconds.
(f) Turn the ignition switch to ON and turn the Techstream on.
(g) Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.
(h) Check that the engine coolant temperature is between - 10°C and 50°C (14 and 122°F).
(i) Start the engine and warm it up.
(j) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving
Pattern
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050B; Cold...
(k) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(l) Input the DTC: P050B.
(m) Check the DTC judgment result.
Result
RESULT
PROCEED TO
NORMAL (DTC is not output)
A
ABNORMAL (DTC P050B is output)
B
B
REPLACE ECM
A
END
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050B; Cold...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000001EY9047X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0550,P0552,P0553; Power Steering Pressure
Sensor Circuit Malfunction; 2015 MY Tundra [08/2014 - ]
DTC
P0550
Power Steering Pressure Sensor Circuit Malfunction
DTC
P0552
Power Steering Pressure Sensor Circuit Low Input
DTC
P0553
Power Steering Pressure Sensor Circuit High Input
DESCRIPTION
The power steering oil pressure sensor is turned ON when a power steering wheel load occurs by turning the
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0550
Power steering oil pressure sensor voltage less than 0.28
V, or more than 4.9 V for 0.5 seconds while engine
running.
(1 trip detection logic)
Open or short in power
steering oil pressure sensor
circuit
Power steering oil pressure
sensor
ECM
P0552
Power steering oil pressure sensor voltage less than 0.28
V for 0.5 seconds while engine running.
(1 trip detection logic)
Open or short in power
steering oil pressure sensor
circuit
Power steering oil pressure
sensor
ECM
P0553
Power steering oil pressure sensor voltage more than 4.9
V for 0.5 seconds while engine running.
(1 trip detection logic)
Open or short in power
steering oil pressure sensor
circuit
Power steering oil pressure
sensor
ECM
WIRING DIAGRAM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0550,P055...
MONITOR DESCRIPTION
The ECM monitors the sensor voltage and uses this value to regulate the engine idling speed. When the sensor
output voltage deviates from the normal operating range, the ECM determines that there is a malfunction in
the power steering oil pressure sensor and stores a DTC.
MONITOR STRATEGY
Related DTCs
P0550: Power steering pressure sensor range check (Chattering)
P0552: Power steering pressure sensor range check (Low Resistance)
P0553: Power steering pressure sensor range check (High Resistance)
Required sensors/Components (Main) Power steering pressure sensor
Duration
0.5 seconds
MIL operation
Immediate
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs not stored
None
Time after starter signal ON to OFF
2 seconds or more
TYPICAL MALFUNCTION THRESHOLDS
P0550:
Power steering pressure sensor voltage
Less than 0.28 V, or more than 4.9 V
P0552:
Power steering pressure sensor voltage
Less than 0.28 V
P0553:
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0550,P055...
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