Toyota 2GR-FE, Manual

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2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–145
ES
HINT:
When any of these DTCs are set, check the IAT by entering the following menus on the intelligent tester:
DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / INTAKE AIR.
MONITOR DESCRIPTION
The ECM monitors the sensor voltage and uses this value to calculate the Intake Air Temperature (IAT).
When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a
malfunction in the IAT sensor and sets a DTC.
Example:
If the sensor output voltage is -40
°
C (-40
°
F) for 0.5 seconds or more, the ECM determines that there is
an open in the IAT sensor circuit, and sets DTC P0113. Conversely, if the output voltage is more than
140
°
C (284
°
F) for 0.5 seconds or more, the ECM determines that there is a short in the sensor circuit,
and sets DTC P0112.
If the malfunction is not repaired successfully, a DTC is set 0.5 seconds after the engine is next started.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
P0110:
P0112:
P0113:
COMPONENT OPERATING RANGE
Temperature Displayed Malfunction
-40
°
C (-40
°
F) Open circuit
140
°
C (284
°
F) or higher Short circuit
Related DTCs
P0110: Intake air temperature sensor open/short (Fluctuating)
P0112: Intake air temperature sensor short (Low electrical resistance)
P0113: Intake air temperature sensor open (High electrical resistance)
Required Sensors/Components (Main) Intake Air Temperature (IAT) sensor
Required Sensors/Components (Sub) -
Frequency of Operation Continuous
Duration 0.5 seconds
MIL Operation Immediate
Sequence of Operation None
Monitor runs whenever following DTCs are not present None
Intake air temperature sensor voltage Less than 0.18 V, or more than 4.91 V
Intake air temperature sensor voltage Less than 0.18 V
Intake air temperature sensor voltage More than 4.91 V
Intake air temperature sensor resistance 98.5
Ω
to 156 k
Ω
[-40 to 140
°
C (-40 to 284
°
F)]