DongFeng E70 User manual

Oct. 2018
Service Manual
(Supplementary process of anniversary version)
The service manual is copyrighted by
Dongfeng Motor Corporation Passenger
Vehicle Company.
The company reserves the right to make
changes to and interpret this manual.
Dongfeng Motor Corporation Passenger Vehicle Company
After-sales Service Technical Document

4.3-1
Supplementary process of anniversary version
Contents
Troubleshooting....................................................................................................................................4.3-3
DTC of AVAS...............................................................................................................................4.3-3
DTC of battery cooling control unit ..............................................................................................4.3-3
DTC of AC (anniversary version).................................................................................................4.3-5
DTC of telematics unit (TU) .........................................................................................................4.3-5
DTC of VCU (independently-developed motor)...........................................................................4.3-6
DTC of ESC .................................................................................................................................4.3-7
DTC of tire pressure monitoring system (TPMS).........................................................................4.3-9
Tire pressure monitoring system........................................................................................................4.3-10
Removal and refitting of tire pressure sensor............................................................................4.3-10
Removal and refitting of tire pressure monitoring control unit...................................................4.3-13
Wireless air leak learning (learning without tools).....................................................................4.3-15
Tire pressure learning (with tools).............................................................................................4.3-17
ESC hydraulic control system............................................................................................................4.3-20
Removal and refitting of steering wheel angle sensor...............................................................4.3-20
Calibration of steering wheel angle sensor................................................................................4.3-21
Calibration of lateral acceleration and longitudinal acceleration sensors .................................4.3-22
Removal and refitting of ESC OFF switch.................................................................................4.3-23
Steering wheel buttons.......................................................................................................................4.3-26
Replacement of steering wheel buttons assembly....................................................................4.3-26
Solar sensor .......................................................................................................................................4.3-29
Removal and refitting of solar sensor........................................................................................4.3-29
Indoor temperature sensor.................................................................................................................4.3-31
Removal and refitting of indoor temperature sensor.................................................................4.3-31
Acoustic vehicle alerting system (AVAS)...........................................................................................4.3-34
Removal and refitting of AVAS..................................................................................................4.3-34
Removal and refitting of acoustic alerting control unit...............................................................4.3-35
Main unit of MP5 ................................................................................................................................4.3-37
Configuration writing after MP5 main unit replacement.............................................................4.3-37

4.3-2
Instrument cluster...............................................................................................................................4.3-38
Configuration writing after instrument cluster replacement.......................................................4.3-38
T-BOX.................................................................................................................................................4.3-39
Configuration writing after T-BOX replacement.........................................................................4.3-39
Air Conditioner....................................................................................................................................4.3-40
Removal and refitting of A/C control unit...................................................................................4.3-40

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.

Troubleshooting
4.3-4
Trouble code
DTC Description
Fault causes
Recommended countermeasures
B2709
EXV failed
EXV in failure status
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
U0073
Body Can involves
BusOff
Body CAN network involves
BusOff
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
U0074
LIN communication
error
LIN network abnormal
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B270A
AC communication loss
EXV communication loss
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B270B
Tee water valve 1 failed
Tee water valve 1 failed
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B2713
Tee water valve 2 failed
Tee water valve 2 failed
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B270C
Tee water valve 1
communication loss
Tee water valve
communication loss
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B270D
Tee water valve 2
communication loss
Tee water valve
communication loss
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B270E
Compressor abnormal
Compressor in failure status
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B270E
Compressor
communication loss
Compressor communication
loss
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B270E
Compressor
communication failure
Compressor communication
failure
1. Test the circuit. 2. Ask the professional
maintenance personnel for maintenance.
B270E
Compressor start-up
failed
Poor release or missing
phase of three-phase line
Replace the compressor (it is
recommended to notify the supplier to
check on site before replacing the
compressor).
B270E
Compressor hardware
protection
IGBT module is damaged.
Replace the compressor.
B270E
High compressor IPM
temperature
1. Poor heat dissipation; 2.
Too little refrigerant;
3. Leakage inside the
compressor.
1. Inspection the suction pressure,
exhaust pressure, and suction
temperature; 2. Replace the compressor.
B270E
Internal stall of
compressor
1. Dirty system; 2.Internal
damage of compressor; 3.
Impurities.
Replace the A/C compressor.
B270F
High compressor bus
current
1. High pressure switch
failure (component
failure/slow); 2. Excessive
refrigerant charging; 3.
Condenser fan inoperation.
1. Install the pressure sensor to the
vehicle. If the pressure rises, check the
A/C system. 2. High system pressure
(above 25 bar), so it is recommended to
add to the standard refrigerant volume
(30 ml recommended to be added after
refilling) ; 3. Check if the condenser fan is
working properly.
B2710
Low compressor
voltage
Low traction battery voltage
Charge the vehicle.
B2711
High compressor phase
current
1. Refrigerant slugging (high
instantaneous phase
current); 2. Refrigerant loop
blocked; 3. Much refrigerant;
4. Condenser fan damaged.
1. Re-vacuum and add refrigerant; 2.
High system pressure (above 25 bar), so
it is recommended to add to the standard
refrigerant volume (30 ml recommended
to be added after refilling) ; 3. Check if
the condenser fan is working properly.
B2712
High compressor
voltage
Output voltage of the high
voltage terminal exceeds the
operating voltage range of
the compressor.
Check if the high input voltage of the
compressor is higher than 405 V.

Troubleshooting
4.3-5
DTC of AC (anniversary version)
Use a special scan tool to perform troubleshooting. For details, see the diagnostic introductions given by
the scan tool.
Trouble
code
Hexadecimal
DTC Description
Fault causes
Recommended
countermeasures
B1614
15
Ambient temperature
sensor short to the power
supply or open
1. ECU circuit failed
2. Sensor not connected
3. Low sensor temperature
Inspect the circuit or
replace the sensor.
B1614
11
Ambient temperature
sensor short to ground
ECU circuit failed
Check circuit or replace
sensor
B1604
15
Evaporator temperature
sensor short to the power
supply or open
1. ECU circuit fault
2. Sensor not connected.
3. Low sensor temperature.
Check circuit or replace
sensor
B1605
11
Evaporator temperature
sensor open
ECU circuit fault
Check circuit or replace
sensor
U3003
17
Power voltage above limit
1. Incorrect ECU collection
2. Abnormal battery voltage
Check the circuit or
replace the ECU.
U3003
16
Power voltage below limit
1. Incorrect ECU acquisition.
2. The supply voltage is abnormal.
Check circuit replace
ECU
B1623
23
Recirculation/fresh motor
open
Circuit failed
Inspect the A/C circuit.
B1623
24
Recirculation/fresh motor
short
Line fault
Inspect A/C lines
DTC of telematics unit (TU)
Trouble
code
Hexadecimal
DTC Description
Fault causes
Recommended
countermeasures
B2300
A300
Built-in battery failed
Battery damaged or fall-off
Disassemble the motor
and remove the battery.
B2301
A301
4G network failure to be
enabled
High temperature environment
—
B2300
A300
High built-in battery
temperature alarm
High temperature environment
—
B2302
A302
WIFI failure to be
initialized
High temperature environment
—
B2302
A302
WIFI connection failure
WIFI module damaged
Disassemble the
telematics unit and
replace the WIFI module.
B2303
A303
GPS failure to be
initialized
High temperature environment
—
B2304
A304
Failure to enter Standby
mode
High temperature environment
—
B2305
A305
Failure to get GPS data
GPS module failed
Replace the GPS module.
B2306
A306
Failure to read from SPI
flash or write data
Flash chip failed
Replace the flash.
B2307
A307
SPI flash failure to be
initialized
Line fault
Check if the MCU and
FLASH circuits are
normal.
U0073
C073
CAN bus off
Number of sent errors on CAN
control unit is 255 or greater.
Check the wire harness
and connector and other
control units.
B2308
A308
CPU uart communication
Line fault
Check if the MCU and
CPU uart are normally
connected.

Troubleshooting
4.3-6
DTC of VCU (independently-developed motor)
Trouble code
DTC Description
Fault causes
Recommended
countermeasures
B1500
Ignition key position signal
abnormal
Key switch sensor abnormal
Replace the key.
B1501
High accelerator pedal angle
signal voltage
High accelerator pedal angle
signal voltage
Replace the accelerator pedal
assembly.
B1502
Low accelerator pedal angle
signal voltage
Low accelerator pedal angle
signal voltage
Accelerator pedal assembly
B1507
Vehicle POST failure
Motor or battery failed
Inspect the power system.
P2304
Vacuum sensor failure
Sensor short to ground; sensor
short to the power supply;
sensor open; sensor signal not
in the effective range.
Replace the vacuum sensor.
P2310
Vacuum pump failed or
vacuum system leaking
Vacuum system leaking or
vacuum pump working timeout
Voltage is within normal range
or re-power on
P2318
Master cylinder pressure
sensor or circuit fault
Sensor or circuit failed
Replace the master cylinder
pressure sensor and inspect
the related wire harness.
P2319
Master cylinder pressure
sensor signal abnormal
Sensor failed
Replace the master cylinder
pressure sensor.
P2320
Brake lamp switch sensor or
circuit failed
Sensor or circuit failed
Replace the brake lamp switch
sensor and inspect the related
wire harness.
P2322
P gear control unit position
sensor failed
P gear control unit reporting
failure
Inspect if the P gear
engagement/disengagement
can be self-recovered,
otherwise the P gear control
unit assembly needs to be
replaced.
P2323
P gear control unit actuator
motor failed
PCU reporting fault
Check if the p-gear
engagement/disengagement
can be recovered
automatically; otherwise,
replace the PCU assembly
P2324
P gear control unit locking
failure
PCU reporting fault
Check if the p-gear
engagement/disengagement
can be recovered
automatically; otherwise,
replace the PCU assembly
P2325
P gear control unit unlocking
failure
PCU reporting fault
Check if the p-gear
engagement/disengagement
can be recovered
automatically; otherwise,
replace the PCU assembly
P2326
P gear control unit unknown
status failure
PCU reporting fault
Check if the p-gear
engagement/disengagement
can be recovered
automatically; otherwise,
replace the PCU assembly
P0561
Battery voltage abnormal
Battery failure or loss of
electricity
Replace the battery.
U0294
BMS communication loss
BMS failed or wire harness
fault
Inspect the wire harness and
the BMS.
U0292
MCU communication loss
MCU failed or wire harness
fault
Inspect the wire harness and
the MCU.
U0155
Instrument communication loss
Instrument failed or wire
harness fault
Inspect the wire harness and
the instrument.
U0116
A/C communication loss
A/C control unit failed or wire
harness fault
Inspect the wire harness and
A/C control unit.
U0121
ABS communication loss
ABS failed or wire harness fault
Inspect the wire harness and
the ABS.
U0140
BCM communication loss
BCM failed or wire harness
fault
Inspect the wire harness and
the BCM.
U0131
EPS communication loss
EPS failed or wire harness fault
Inspect the wire harness and
the EPS.

Troubleshooting
4.3-7
DTC of ESC
Trouble code
DTC Description
Fault causes
Recommended
countermeasures
CAN control unit
CAN control unit failed
Internal damage of ESC
Replace the ESC.
C0051
Switching valve S/M1 failed
Internal damage of ESC
Replace the ESC
C0052
Switching valve S/M2 failed
Internal damage of ESC
Replace the ESC
C0053
Normally open valve (FR) of
ABS failed
Internal damage of ESC
Replace the ESC
C0054
Normally closed valve (FR)
of ABS failed
Internal damage of ESC
Replace the ESC
C0055
Normally open valve (FL) of
ABS failed
Internal damage of ESC
Replace the ESC
C0056
Normally closed valve (FL) of
ABS failed
Internal damage of ESC
Replace the ESC
C0057
Normally open valve (RR) of
ABS failed
Internal damage of ESC
Replace the ESC
C0058
Normally closed valve (RR)
of ABS failed
Internal damage of ESC
Replace the ESC
C0059
Normally open valve (RL) of
ABS failed
Internal damage of ESC
Replace the ESC
C005A
Normally closed valve (RL)
of ABS failed
Internal damage of ESC
Replace the ESC
C005B
Valve bank relay failed
1. External wiring/circuit abnormal
2. Internal damage of ESC
1. Eliminate the external fault.
2. Replace the ESC.
C005C
Fuel pump motor failed
1. External wiring/circuit abnormal
2. Internal damage of ESC
1. Eliminate the external fault.
2. Replace the ESC.
C005D
STP-SW failed
1. Poor wiring contact
2. STP-SW damaged
3. STP-SW malposition
1. Re-wire
2. Replace the STP-SW.
3. Adjust the STP-SW position.
U3003
Power voltage abnormal
1. External wiring/circuit abnormal
2. Power internal damage
1. Eliminate the external fault.
2. Replace the power supply.
U3003
Motor power abnormal
1. External wiring/circuit abnormal
2. Power internal damage
1. Eliminate the external fault.
2. Replace the power supply.
C005E
Wheel speed sensor 1 (FR)
failed
1. External wiring/circuit abnormal
2. Sensor damaged
1. Eliminate the external fault.
2. Replace the sensor.
C005F
Wheel speed sensor 1 (FL)
failed
1. External wiring/circuit abnormal
2. Sensor damaged
1. Eliminate the external fault.
2. Replace the sensor.
C0060
Wheel speed sensor 1 (RR)
failed
1. External wiring/circuit abnormal
2. Sensor damaged
1. Eliminate the external fault.
2. Replace the sensor.
C0061
Wheel speed sensor 1 (RL)
failed
1. External wiring/circuit abnormal
2. Sensor damaged
1. Eliminate the external fault.
2. Replace the sensor.
C0062
Wheel speed sensor 2 (FR)
failed
1. External wiring/circuit abnormal
2. Mounting position of sensor
improper
3. sensor external connection
abnormal
4. Sensing head damaged
1. Verify the external wiring and
circuit.
2. Adjust the mounting position
of sensor.
3. Replace the sensor.
4. Replace the sensor.
C0063
Wheel speed sensor 2 (FL)
failed
1. External wiring/circuit abnormal
2. Mounting position of sensor
improper
3. External connection of sensor
abnormal
4. Inductive head of sensor
damaged
1. Verify the external wiring and
circuit
2. Adjust the mounting position
of sensor
3. Replace the sensor.
4. Replace the sensor.
C0064
Wheel speed sensor 2 (RR)
failed
1. External wiring/circuit abnormal
2. Mounting position of sensor
improper
3. External connection of sensor
abnormal
4. Inductive head of sensor
damaged
1. Verify the external wiring and
circuit
2. Adjust the mounting position
of sensor
3. Replace the sensor.
4. Replace the sensor.

Troubleshooting
4.3-8
Trouble code
DTC Description
Fault causes
Recommended
countermeasures
C0065
Wheel speed sensor 2 (RL)
failed
1. External wiring/circuit
abnormal
2. Mounting position of sensor
improper
3. External connection of
sensor abnormal
4. Inductive head of sensor
damaged
1. Verify the external wiring and
circuit
2. Adjust the mounting position
of sensor
3. Replace the sensor.
4. Replace the sensor.
C0066
Incorrect wheel gear number
1. Wheel abnormal
2. Wheel speed sensor
connection abnormal
3. Wheel speed sensor sensing
head failed
1. Verify the tire condition.
2. Verify the external
connection of wheel speed
sensor.
3. Replace the wheel speed
sensor.
C0067
Master cylinder pressure
sensor failed
1. External system or actuator
failed
2. Sensor damaged
3. STP-SW abnormal
4. STP-SW malposition
1. Eliminate the external fault.
2. Replace the ESC.
3. Replace the STP-SW.
4. Adjust the STP-SW position.
C0068
G sensor failed
Internal damage of ESC
Replace the ESC.
C0069
YrG sensor failed
Internal damage of ESC
Replace the ESC
C006A
Sensor not calibrated
Sensor not calibrated
Calibrate the sensor.
C006B
Steering angle sensor signal
abnormal
1. External wiring/circuit
abnormal
2. Sensor damaged
1. Eliminate the external fault.
2. Replace the sensor.
C006C
Steering angle sensor not
calibrated
Sensor not calibrated
Calibrate the sensor.
U0293
VCU signal abnormal
VCU failed
Check the VCU end operation.
U0103
ESM signal
ESM failed
Check the ESM end operation.
U0073
CAN communication
1. VUC/ESM/SAS failed
2. CAN BUS abnormal
1. Check the operation of
VUC/ESM/SAS.
2. Check the external fault.