No
Intermittent Fault. Refer to
Yes
Step 12
Diagnostic completed.
5. Repair Instructions:
Replace MAP sensor. Refer to
Intake Air Pressure and Temperature Sensor Replacement
.
Engine Control Module Replacement
2.12.7.19 DTC P0112 P0113
1. DTC Descriptor:
DTC
P0112
Intake Air Temperature Pressure Sensor Circuit Low Voltage
DTC
P0113
Intake Air Temperature Pressure Sensor Circuit High Voltage or Open
Intake air temperature pressure sensor has a signal circuit and an ECM internal ground circuit. Intake air temperature pressure
sensor is used to measure the air temperature entering the engine. ECM provides 5 V reference voltage through ECM harness
connector EO01 terminal No.9 to the intake air temperature pressure sensor harness connector EO16 terminal No.2 and an internal
low reference voltage through EO01 terminal No.19 to the intake air temperature pressure sensor EO16 terminal No.1. When the
intake air temperature pressure sensor in cold, the sensor resistance is relatively high. When the air temperature rises, the sensor
resistance decreases. When the sensor resistance is high, ECM detected intake air temperature pressure sensor signal circuit
voltage is high. With the decrease of sensor resistance, ECM detected intake air temperature pressure sensor signal circuit voltage
also decreases.
2. Conditions For Setting DTC and The Fault Location:
DTC Code
DTC Detection
Strategy
Conditions For Setting The DTC (Control Strategy)
Fault Locations
P0112
P0113
1. More Than the Upper
Limit
2. Lower Than the Lower
Limit
1. Vehicle speed is greater than 50 km/h.
2. MAT circuit is short to ground.
3. MAT signal voltage becomes 0 immediately.
1. Sensor Circuit
2. Sensor
3. ECM
1. Vehicle speed is less than 25 km/h.
2. MAT circuit is open or short to 5 V reference voltage.
3. Schematic:
schematic Refer to
in Schematic.
4. Diagnostic Steps:
Note
Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.
Step 1
Initial Inspection
2-658
Control System JL4G15-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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