Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
197
Cylinder judging signal not reliable;
Sensor circuit failure.
After knock sensor fault flagging out the failure position, knock set control loop is Disconnect and the
advance angle of ignition stored in the ECU will be fixed to a safe angle by the software program. When
the error frequency drops below the set value, the fault indication will reset.
5. Removal and installation
1
）
Removal
①
Disconnect knock sensor harness connector.
②
Unscrew knock sensor locking nut, remove the knock sensor.
Attention:
■
Do not drop or damage the sensor.
2) Installation
Install with reversed steps of disassembly.
■
Tightening torque: 16 - 24N • m
IX.
Air-conditioning switch and relay
1. Description
When air conditioner is turned on, the air conditioning switch will send the battery voltage signal to the
ECM. After air conditioner turned-on signal input, ECM drives electronic throttle to increase idling
speed of engine, and correct ignition advance angle. At the same time, ECM controls air conditioning
relay to make the compressor magnetic clutch working.
2. Inspection
Fig. 4.3.020
