Precautions for the technician who uses a medical electric device
Key Part Check before Maintenance and Repair
Precautions for SRS "Air Bag" and "seat belt pre-tensioner
Precautions for removing 12V battery
Precautions for the technician who uses a medical electric device
Operation Prohibition
Warning：
● This vehicle uses strong magnetic components.
● If a technician uses the electronic medical devices such as the electronic pacemaker, the electronic device can not be operated on the vehicle as the function of the electronic device may be affected by the strong magnetic components.
Normal charge precaution
Warning：
● If a technician uses a medical electric device such as an implantable cardiac pacemaker or an implantable cardioverter defibrillator, the possible effects on the devices must be checked with the device manufacturer before starting the charge operation.
● As radiated electromagnetic wave generated by on board charger at normal charge operation may effect medical electric devices, a technician using a medical electric device such as implantable cardiac pacemaker or an implantable cardioverter defibrillator must not enter the vehicle compartment (including trunk) during normal charge operation.
Precaution at telematics system operation
● If a technician uses implantable cardiac pacemaker or implantable cardioverter defibrillator (ICD), avoid the device implanted part from Communication device.
● The electromagnetic wave of TCU might affect the function of the implantable cardiac pacemaker or the implantable cardioverter defibrillator (ICD), when using the service, etc.
● If a technician uses other medical electric devices than implantable cardiac pacemaker or implantable cardioverter defibrillator (ICD), the electromagnetic wave of TCU might affect the function of the device. The possible effects on the devices must be checked with the device manufacturer before TCU use.
Key Part Check before Maintenance and Repair
Check the high-voltage system, and ensure the high-voltage system is powered off before starting the maintenance work, and disconnect the battery switch.
Cautions：
If the timer air conditioner or timer charge is set, the high voltage system starts automatically even when the power switch is in OFF state.
Precautions for SRS "Air Bag" and "seat belt pre-tensioner
Supplemental Restraint System (SRS) "Air Bag" and "seat belt pre-tensioner" are used on the front seat belts, which can help to reduce the dangers or serious injury of the driver and the front passenger in certain type of collisions. The relevant information of safe usage of the system are included in the SRS and Safety Belt Section of the Service Manual.
Warning:
In order to prevent accidents, please follow the below points：
● Avoid the deactivation of SRS. Its failure will increase the personal injury caused by the airbag collision in the major collision accident. All the repairs must be done by the authorized dealer of JAC.
● Improper repair, including wrong removal and installation of SRS system, will make the system unable to activate and cause personal injury. Regarding the spiral cable and airbag modules, please refer to "SRS AIR BAG".
● Unless it is allowed in Service Manual, please do not use the electronic test equipment on the relevant circuit of SRS. The harness of SRS uses yellow or orange harness or harness connector, which can be easily recognized.
Precautions for using power tools (air or electric power) and hammers.
● When the power switch is turned on, do not use the pneumatic or electric tools or hammer to hammer the surrounding areas of the airbag diagnostic sensor or airbag system sensors. Strong vibration may activate the sensors and unfold the air bag, which will cause serious injuries.
● When using the pneumatic or electric tools or hammer, please switch off the power always, unplug the 12V lead-acid battery pile head, and wait at least 1 minute and then repair.
Precautions for removing 12V battery
Before removing the 12V battery, please turn the power switch to the ON position, then turn to the OFF position.
Tips：
● When the power switch is on OFF position, the automatic charging control system of the battery may start.
● When turning the power switch from ON position to OFF position, the automatic charging control system of the battery will not start.
Common Precautions
● Before the serving, which is not need to use the power supply: turn the power switch to LOCK position, disconnect the 12V storage battery negative terminal.
● After disconnecting 12V storage battery negative terminal, the storage memory of radio and other control devices will be deleted.
● Replace the new oil seal、pad、seal ring、O-ring、lock-up gasket、split pin、self-locking nut and other components.
● Place the removed components according to the assembly-oriented position and order.
● If necessary, use authorized binder、sealant or equivalent product.
● In order to repair the vehicle safely and efficiently, right use of hand tools、power tools(only for removal) and special tools is necessary.
● Before Servicing：
Use suitable cover to cover the wheel fender、interior and carpet. Attention, do not use the key、fastener or the like to scratch the paintwork.
Preparations
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Tool |
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Instructions |
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Power Tool |
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Install and remove the bolts and nuts |
1. Reversing Radar Controller Assembly
List of Malfunction Diagnosis
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No |
Malfunction Phenomenon |
Analysis of Malfunction Reason |
Countermeasures |
Remark |
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1 |
System does not work as reversing |
Reversing switch has not been connected |
Replace reversing switch |
Refer to System Out of Service |
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Poor connection between harness and main power supply |
Check harness for correct connection with power supply |
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Incorrect connection of connector |
Correct reconnection of all connectors |
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2 |
Sensor does not work |
Incorrect connector position result in sensor out of service |
Correct reconnection of all sensor connectors |
Refer to Sensor Out of Service |
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3 |
Buzzer alarms continuously, butthere is no barrier behind the vehicle |
Check vehicle body or ground |
Correct installation according to manual, if necessary, technicians can guide the inspection |
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Incorrect installation of sensor or sensor has come off |
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Sensor has been damaged |
If sensor has been damaged, please replace it in time |
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Connecting wire of sensor has been damaged |
Check harness for damage |
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4 |
Barrier distance can’t be displayed |
Abnormal battery voltage |
Check battery for normal voltage |
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Whether connector position is correct or not |
Turn off system, correct reconnection of all connectors |
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Sensor harness has been disturbed |
Check connecting wire of sensor for contact with exhaust pipeline、muffler |
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5 |
No prompt tone as starting up, other devices work normally without warning tone |
Instrument malfunction(buzzer has been integrated into instrument) |
Check connecting wire and connector of instrument, correct reconnection of instrument |
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Replace instrument |
Flow Chart of Malfunction Diagnosis
System Out of Service
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Step |
Inspection Content |
Countermeasures |
Judgement Standard |
Next Step |
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Yes |
No |
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1 |
Confirm malfunction phenomenon
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Ignition switch stays ON gear, shift transmission to reversing gear |
Whether you can hear buzzer warning sound or not |
Deal with intermittent malfunction, turn to next step |
Turn to step 3 |
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2 |
Check intermittent malfunction |
Check and deal with loose malfunction of harness connector of reversing lamp switch Check and deal with loose malfunction of harness connector of combination instrument |
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3 |
Check reversing lamp fuse |
Remove reversing lamp fuse IF20, check whether fuse has been blown out or not? |
Fuse has been blown out or not? |
Check fuse circuit for short circuit malfunction and replace fuse |
Next step |
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4 |
Check power supply of reversing radar controller |
Use multimeter to measure the voltage between No.12 terminal of harness connector F07 of reversing radar controller and reliable grounding |
Voltage standard 11~14V whether voltage is in accordance with standard or not? |
Next step |
Inspect or replace harness |
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5 |
Check grounding wire of reversing radar controller |
Use multimeter to measure the voltage between No.13 terminal of harness connector F07 of reversing radar controller and reliable grounding |
Standard Resistance：less than 1Ω， Whether resistance is in accordance with standard or not? |
Next step |
Inspect or replace harness |
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6 |
Check the circuit between reversing radar controller and reversing lamp fuse |
Shift transmission to reversing gear, measure the resistance between relevant terminal of harness connector of reversing radar controller and No.12 terminal of harness connector of reversing lamp fuse |
Standard Resistance：less than 1Ω， Whether resistance is in accordance with standard or not? |
Next step |
Inspect or replace harness |
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7 |
Replace reversing radar controller, whether the malfunction has been removed or not? |
Replace new reversing radar controller. Key switch stays ON gear, shift transmission to reversing gear |
Whether you can hear prompt tone of buzzer or not? |
Troubleshooting |
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Sensor Out of Service
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Step |
Inspection Content |
Countermeasures |
Judgement Standard |
Next Step |
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Yes |
No |
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1 |
Confirm malfunction phenomenon |
Ignition switch stays ON gear, shift transmission to reversing gear, place suitable barrier in the rearpart of vehicle within proper range |
Whether you can hear warning tone of parking |
Deal with intermittent malfunction, turn to next step |
Turn to Step 3 |
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2 |
Check intermittent malfunction |
Check and deal with loose malfunction of harness connector of reversing radar sensor |
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3 |
Check the circuit between reversing radar sensor and reversing radar controller |
Measure the resistance between No.1 terminal of harness connector RB07 of reversing radar sensor and No. 1/2/3/4 terminal of harness connector F07 of reversing radar controller |
Standard Resistance：less than 1Ω， Whether resistance is in accordance with standard or not? |
Next Step |
Inspect or replace harness |
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4 |
Check the circuit between reversing radar controller and reversing radar sensor |
Measure the resistance between No.2 terminal of harness connector RB07 of reversing radar sensor and No. 14 terminal of harness connector F07 of reversing radar controller |
Standard Resistance：less than 1Ω， Whether resistance is in accordance with standard or not? |
Next Step |
Inspect or replace harness |
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5 |
Check the circuit between reversing radar controller and reversing radar sensor |
Measure the resistance between No.4 terminal of harness connector RB07 of reversing radar sensor and No. 23 terminal of harness connector F07 of reversing radar controller |
Standard Resistance：less than 1Ω， Whether resistance is in accordance with standard or not? |
Next Step |
Inspect or replace harness |
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6 |
Replace reversing radar sensor, whether the malfunction has been removed or not? |
Replace new reversing radar sensor, turn ignition switch to ON gear, shift transmission to reversing gear, turns to reversing state |
Whether the malfunctioncan be detected or not? |
Troubleshooting |
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Reversing Radar Controller
Removal
1. Open front compartment cover
2. Disconnect battery negative cable
3. Remove tailgate threshold assembly. Refer to Tailgate Threshold Assembly.
4. Remove threshold backplate assembly of rear door. Refer to Threshold Backplate Assembly of Rear Door
5. Remove rear seat cushion assembly. Refer to Rear Seat Assembly
6. Remove rear seat backrest assembly. Refer to Rear Seat Assembly
7. Remove rotor bracket of backrest. Refer to Downward Decorative Plate of Column C
8. Remove downward decorative plate of column C. Refer to Downward Decorative Plate of Column C
9. Remove upward decorative plate of column C. Refer to Upward Decorative Plate of Column C
10. Remove decorative plate assembly on the left side of trunk. Refer to Decorative Plate Assembly of Trunk Side
11. Remove reversing radar controller assembly
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1). Disconnect harness connector ① of reversing radar controller assembly. 2). Remove two mounting bolts ② of reversing radar controller assembly. |
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Installation
1. Install reversing radar controller assembly
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1). Install and tighten up two mounting bolts ② of reversing radar controller assembly. Tightening torque:4~6N·m 2). Connect harness connector ① of reversing radar controller assembly
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2. Install decorative assembly on the left side of trunk
3. Install upward decorative assembly of column C
4. Install downward decorative assembly of column C
5. Install rotor bracket of backrest
6. Install rear seat backrest assembly
7. Install rear seat cushion assembly
8. Install rear door threshold assembly
9. Install tailgate threshold assembly
10. Connect battery negative cable
11. Close front compartment cover
Sensor Assembly
Removal
1. Open front compartment cover
2. Disconnect battery negative cable. Refer to Disconnection and Connection of Battery Cable
3. Remove quarter combination lamp assembly. Refer to Quarter Combination Lamp Assembly
4. Remove rear bumper assembly
5. Remove sensor assembly
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1). Disconnect harness connector of sensor assembly
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2). Rotate snap ring, take down lock catch① 3). Take down rubber pad ② with shrapnel, and take down sensor body ③ from outside
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Installation
1. Install sensor assembly
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1). Install sensor body ③ from front of rear bumper, install rubber pad ②and snap ring ① along the harness built in sensor body. 2). Rotate snap ring ① clockwise as pressing sensor body, make rubber pad and rear bumper fit closely together.
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△Caution
Triangle mark of snap ring should be aligned with triangle mark of sensor assembly, that is to say, they are tightened up closely.
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3). Connect harness connector of sensor.
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2. Install rear bumper assembly
3. Install rear quarter combination lamp assembly
4. Connect battery negative cable
5. Close front compartment