Yes

Step 4

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 5

Replace ECM. Refer to 

2.2.8.8

 

Engine Control Module Replacement

.

Next

Step 6

Carry  out  crankshaft  position  sensor  self  learn.  Refer  to 

2.12.7.11

 

Crankshaft  Position  Sensor  (CKP)

Learn

.

Next

Step 7

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)

Road test the vehicle for at least 10 min.

(f)

Read control system DTC code.

Verify that the system has no DTC code.

No

Intermittent Fault. Refer to

2.12.7.3

 

Intermittent Fault Check

Yes

Step 8

Diagnostic completed.

5. Repair Instructions:

VVT solenoid valve replacement, refer to 

2.2.8.4

 

VVT Solenoid Valve Replacement and Filter Cleaning

.

2.12.7.18 DTC P0107 P0108

1. DTC Descriptor:

DTC

P0107

Intake Air Pressure Sensor Circuit Low Voltage or Open

DTC

P0108

Intake Air Pressure Sensor Circuit High Voltage

Intake Manifold Absolute Pressure (MAP) Sensor responds to the intake manifold pressure changes. Pressure varies as engine
load changes. MAP sensor circuit consists of the following:

•

5 V Reference Voltage Circuit

Engine

Control System JL4G15-D

2-651

•

Low Reference Voltage Circuit

•

Sensor Signal Circuit

ECM provides 5 V reference voltage through ECM harness connector EO01 terminal No.6 to the sensor harness connector EO16
terminal No.3 and a low reference voltage through EO01 terminal No.19 to EO16 terminal No.1. The sensor provides a signal through
EO16 terminal No.4 to ECM harness connector EO01 terminal No.27. This signal is related to the intake manifold pressure change.
When the intake manifold absolute pressure is low, such as at idle or during deceleration, ECM detected signal voltage is low. When
the intake manifold absolute pressure is high, such as the ignition switch turned on with the engine is turned off, or when the throttle
is fully open, ECM detected signal voltage is high. Sensors are also used to determine the atmospheric pressure. Running the engine
with the throttle fully open, atmospheric pressure readings will also be updated. ECM monitors sensor signals in order to determine
whether the voltage is beyond the normal range.

2. Conditions For Setting DTC and The Fault Location:

DTC Code

DTC Detection Strategy

Conditions For Setting The DTC (Control

Strategy)

Fault Locations

P0107

Circuit Inspection, Lower Than
The Minimum

1. Idle

2. When the sensor circuit short or

ground, the sensor signal voltage is
0

1. Sensor Circuit

2. Sensor

3. ECM

P0108

Circuit Inspections, Exceeding
The Maximum

1. Idle

2. When the sensor circuit short to

power supply or a 5 V reference
voltage

3. Sensor A / D initial signal is 99.6%

2-652

Control System JL4G15-D

Engine

3. Schematic:

6

27

19

9

Intake Air Pressure Temperature Sensor

Engine 

Control 

Module

FE02-5207b

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

Check the existence of the following conditions:

(a)

Sensor housing damage, vacuum tubes broken.

(b)

Sensor seal damage.

(c)

Sensor loose or improperly installed.

(d)

Sensor tube blockage.

Next

Note

It is prohibited Connect intake manifold absolute pressure sensor 5 V reference voltage circuit to other components,
otherwise it will damage the sensor and ECM.

Step 2

Measure intake manifold absolute pressure sensor 5 V reference voltage.

Engine

Control System JL4G15-D

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FE02-5335b

1 2 3 4

Intake Air Temperature/Pressure Sensor Harness 
Connector EO16

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake manifold absolute pressure sensor wiring
harness connector EO16.

(c)

Turn the ignition switch to "ON" position.

(d)

Measure voltage between intake manifold absolute pressure
sensor wiring harness connector EO16 terminal No.3 and a
reliable ground.

Standard voltage: 4.5V-5.5V

(e)

Connect intake manifold absolute pressure sensor wiring
harness connector EO16.

Is the voltage specified value?

No

Go to step 6

Yes

Step 3

Measure sensor signal circuit.

FE02-5336b

1 2 3 4

Intake Air Temperature/Pressure Sensor Harness 
Connector EO16

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake manifold absolute pressure sensor wiring
harness connector EO16.

(c)

Turn the ignition switch to "ON" position.

(d)

Connect a 5A fuse cross-wiring between EO16 terminals No.
3 and No.4. With a scan tool, observe "Actual Intake Manifold
Absolute Pressure Sensor Voltage" parameter.

standard value: 4.5V-5.5V

(e)

Connect intake manifold absolute pressure sensor wiring
harness connector EO16.

Data normal?

No

Go to step 7

Yes

Step 4

Measure intake manifold absolute pressure sensor ground circuit.

FE02-5337b

1 2 3 4

Intake Air Temperature/Pressure Sensor Harness 
Connector EO16

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake manifold absolute pressure sensor wiring
harness connector EO16.

(c)

Turn the ignition switch to "ON" position.

(d)

Measure resistance between intake manifold absolute
pressure sensor wiring harness connector EO16 terminal No.
1 and a reliable ground.

Standard Value: Less than 3 Ω

(e)

Connect intake manifold absolute pressure sensor wiring
harness connector EO16.

Resistance normal?

No

Go to step 8

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Control System JL4G15-D

Engine