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.
Recommended
countermeasures
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.
Ambient temperature
sensor short to ground
Check circuit or replace
sensor
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
Evaporator temperature
sensor open
Check circuit or replace
sensor
Power voltage above limit
1. Incorrect ECU collection
2. Abnormal battery voltage
Check the circuit or
replace the ECU.
Power voltage below limit
1. Incorrect ECU acquisition.
2. The supply voltage is abnormal.
Check circuit replace
ECU
Recirculation/fresh motor
open
Recirculation/fresh motor
short
DTC of telematics unit (TU)
Recommended
countermeasures
Battery damaged or fall-off
Disassemble the motor
and remove the battery.
4G network failure to be
enabled
High temperature environment
High built-in battery
temperature alarm
High temperature environment
WIFI failure to be
initialized
High temperature environment
Disassemble the
telematics unit and
replace the WIFI module.
GPS failure to be
initialized
High temperature environment
Failure to enter Standby
mode
High temperature environment
Failure to read from SPI
flash or write data
SPI flash failure to be
initialized
Check if the MCU and
FLASH circuits are
normal.
Number of sent errors on CAN
control unit is 255 or greater.
Check the wire harness
and connector and other
control units.
Check if the MCU and
CPU uart are normally
connected.
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