Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
155
Chapter III Electronic Control System of Engine
Section I Precautions
I.
Precautions of Supplemental Restraint System (SRS)
Using the SRSs including airbag and pretensioner of safety belt together with the front seat safety belt
can contribute to reduction of the risk of injury and hazard severity of driver and front passenger in case
of crash. For information of proper maintenance of the system, please refer to “Airbag” part of this
manual.
Caution:
■
All maintenance operation should be carried out by JAC authorized franchised stores in
order to avoid increasing risk of personal injury and death due to the SRS system failure.
■
Improper maintenances, including incorrect dismantlement and installation of SRS system,
may cause wrong action of the system resulting in personal injury and death.
For dismantlement methods bell spring (hair spring) and airbag controller, please refer to the airbag
section.
■
Besides operations described in this manual, no electrically testing equipment should be used to test
any circuit of airbag system. The air bag circuit harness can be identified by the yellow or orange
harness or harness connectors.
II. General Precautions
1. Only digital electric meter should be used to inspect the electronic control system.
2. JAC genuine components should be used during maintenance, otherwise it is impossible to
guarantee the normal operation of system.
3. Only unleaded gasoline should be used for maintenance and operation.
4. Specified maintenance and diagnosis procedure should be followed to perform maintenance.
5. The disassembly and dismantlement for the system components are prohibited during maintenance.
6. During maintenance process, the electronic elements (electronic control modules and sensors)
should be fetched and placed very carefully to avoid the falling down.
7. Keep strong awareness of environmental protection to effectively deal with waste of the
maintenance process.
III. Precautions in Maintenance
1. Temperature of electronic control module should never be higher than 80
during
℃
hot working
conditions simulation of trouble and other maintenance operations possibly resulting in the
temperature rising.
2. The electronic controlled injection system operates with high fuel pressure (approximately 350kPa).
