Yes

Step 5

Replace intake manifold absolute pressure sensor.

Next

Go to step 10

Step 6

Check sensor 5 V reference voltage circuit.

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Intake Air Temperature/Pressure Sensor Harness 
Connector EO16

ECM Harness Connector EO01

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake manifold absolute pressure sensor wiring
harness connector EO16.

(c)

Disconnect ECM harness connector EO01.

(d)

Measure resistance between intake manifold absolute
pressure sensor wiring harness connector EO16 terminal No.
3 and ECM harness connector terminal No.6. Check whether
the circuit is open. Otherwise, repair the fault part.

(e)

Measure resistance between intake manifold absolute
pressure sensor wiring harness connector EO16 terminal No.
3 and a reliable ground. check whether the circuit is short to
ground. Otherwise, repair the fault part.

(f)

Measure resistance between intake manifold absolute
pressure sensor wiring harness connector EO16 terminal No.
3 and power supply. check whether the circuit is short to
power supply. Otherwise, repair the fault part.

Test Items

Standard Value

Resistance Between EO16 (3) and EO01 (6)

Less than 1 Ω

Resistance Between EO16 (3) and A
Reliable Ground

10 kΩ or higher

Voltage Between EO16 (3) and A Reliable
Ground

0 V

Next

Go to step 9

Step 7

Check sensor signal circuit.

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Intake Air Temperature/Pressure Sensor Harness 
Connector EO16

ECM Harness Connector EO01

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake manifold absolute pressure sensor wiring
harness connector EO16.

(c)

Disconnect ECM harness connector EO01.

(d)

Measure resistance between intake manifold absolute
pressure sensor harness connector EO16 terminal No.4 and
ECM harness connector terminal No.27. Check whether the
circuit is open. Otherwise, repair the faulty part.

(e)

Measure resistance between intake manifold absolute
pressure sensor harness connector EO16 terminal No.4 and
a reliable ground. Check whether the circuit is short to
ground. Otherwise, repair the faulty part.

(f)

Measure voltage between intake manifold absolute pressure
sensor harness connector EO16 terminal No.4 and power
supply. Check whether the circuit is short to power supply.
Otherwise, repair the faulty part.

Test Items

Standard Value

Resistance Between EO16 (4) and EO01
(27)

Less than 1 Ω

Resistance Between EO16 (4) and A
Reliable Ground

10 kΩ or higher

Voltage Between EO16 (4) and A Reliable
Ground

0 V

Normal

Go to step 9

Step 8

Check sensor ground circuit.

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Engine

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Intake Air Temperature/Pressure Sensor Harness 
Connector EO16

ECM Harness Connector EO01

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake manifold absolute pressure sensor wiring
harness connector EN16.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between intake manifold absolute
pressure sensor harness connector EO16 terminal No.1 and
ECM harness connector terminal No.19. Check whether the
circuit is open. Otherwise, repair the faulty part.

(e)

Measure voltage between intake manifold absolute pressure
sensor harness connector EO16 terminal No.1 and a reliable
ground. check whether the circuit is short to ground.
Otherwise, repair the faulty part.

Test Items

Standard Value

Resistance Between EO16 (1) and EO01
(19)

Less than 1 Ω

Voltage Between EO16 (1) and A Reliable
Ground

0 V

Execute next step as per normal.

Next

Step 9

Check ECM power supply circuit.

(a)

Check whether ECM power supply circuit is normal.

(b)

Check whether ECM ground circuit is normal.

No

Repair the faulty part.

Yes

Step 10

Replace ECM.

(a)

Replace ECM. Refer to 

2.2.8.8

 

Engine Control Module

Replacement

.

(b)

Carry out crankshaft position sensor self learn. Refer to

2.12.7.11

 

Crankshaft Position Sensor (CKP) Learn

.

Next

Step 11

Use scan tool to confirm whether the DTC code is stored again.

(a)

Connect scan tool to the datalink connector.

(b)

Turn the ignition switch to "ON" position.

(c)

Clear DTC code.

(d)

Start and run the engine at idle speed to warm up the engine
for at least 5 min.

(e)

Read control system DTC code again to confirm that the
system has no DTC code.

Engine

Control System JL4G15-D

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No

Intermittent Fault. Refer to 

2.2.7.3

 

Intermittent

Fault Check

Yes

Step 12

Diagnostic completed.

5. Repair Instructions:

Replace MAP sensor. Refer to 

2.2.8.7

 

Intake Air Pressure and Temperature Sensor Replacement

.

Refer to 

2.2.8.8

 

Engine Control Module Replacement

Replace ECM.

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 

2.12.7.18

 

DTC P0107 P0108

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

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Control System JL4G15-D

Engine