Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
180
4. Diagnosis
Sensor short circuit (to ground, to power supply);
Sensor circuit open;
Sensor detects the intake pressure exceeds the upper limit;
Sensor detects the Intake pressure exceeds the lower limit;
5. Trouble Solution
Mainly check the 4 connections of the sensor and connection with ECU for short circuit, open
circuit;
Check sensor detection holes for blockage.
Whether a short circuit, open circuit, grounding problem exists in sensor wiring harness
Whether sensor is highly impacted resulting in sensor failure.
Operating pressure range: 12.5kPa - 115kPa
Operating temperature range: -40 - 125
℃
6. Dismantlement and Installation
1) Dismantlement
①
Disconnect the wire harness connectors of intake
manifold pressure & temperature sensors.
Attention:
■
Make sure that the ignition switch is at “Off”
position.
②
Disassemble the fixing screws of the intake
pressure/temperature sensor with crosshead screw
driver, remove the sensor.
2) Installation
Be aware of following precautions and install with steps contrary to dismantlement.
Fig.4.3.002
Fig.4.3.003
