DongFeng E70 User Manual

Troubleshooting
4.3-3
Troubleshooting
DTC of AVAS
DTC
DTC description
Possible causes
Recommended
countermeasures
U3003
Low voltage
Low battery voltage
Too low battery voltage, please
check battery
U3003
High voltage
High battery voltage
Too high battery voltage,
please check battery
B2800
Working current abnormal
Internal fault of control unit
Check the acoustic alerting
control unit.
DTC of battery cooling control unit
Trouble code
DTC Description
Fault causes
Recommended
countermeasures
U3003
High power voltage
1. Battery voltage abnormal
2. BCU collection abnormal
Check the wire harness or
replace the BCU.
U3003
Low power voltage
1. Battery voltage abnormal
2. BCU collection abnormal
Check the wire harness or
replace the BCU.
B2700
High pressure sensor open
1. Sensor open
2. Collection circuit abnormal
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2700
High pressure sensor short
1. Sensor open
2. Collection circuit abnormal
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2701
Low pressure sensor open
1. Sensor open
2. Collection circuit abnormal
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2701
Low pressure sensor short
1. Sensor open
2. Collection circuit abnormal
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2702
Low pressure side temperature
sensor open
1. Sensor open
2. Collection circuit abnormal
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2702
Low pressure side temperature
sensor short
1. Sensor open
2. Collection circuit abnormal
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2703
PTC water outlet temperature
sensor open
Sensor short or open
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2703
PTC water outlet temperature
sensor short
Sensor short or open
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2704
Solenoid valve open
Sensor short or open
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2704
Solenoid valve short
Sensor short or open
1) Check the wire harness and
the sensor; 2) Replace the
BCU.
B2705
Electromagnetic expansion
valve (EXV) overpressure
1. Battery voltage abnormal
2. BCU collection abnormal
Check the wire harness or the
EXV.
B2705
Electromagnetic expansion
valve (EXV) underpressure
1. Battery voltage abnormal
2. BCU collection abnormal
Check the wire harness or the
EXV.
B2706
Water pump failed
Internal fault of water pump
1. Inspect the line.
2. Inspect the pipeline.
3. Inspect the w ater pump
status.
B2707
PTC failed
Internal fault of PTC
1. Inspect the circuit to see if
the PTC can heat normally;
2. Professional personnel carry
out overhaul.
B2708
Protection of high system
pressure
High system pressure
1. Test the circuit. 2. Verify the
pressure. 3. Condenser has
poor heat dissipation. 4.
Professional personnel carry
out service.

DongFeng E70 Specifications

General

Brand	DongFeng
Model	E70
Category	Automobile
Language	English