Chery T21 2014 Service Manual page 1355

DTC Code DTC Definition
AC in Car Temperature
Sensor Short to
B2120
Ground or Open Circuit
(Left Side)
AC in Car Temperature
Sensor Short to
B2121
Ground or Open Circuit
(Right Side)
CAUTION
 When performing electrical equipment diagnosis and test, always refer to the circuit diagram for related
circuit and component information.
Diagnosis Procedure
1
Check wire harness and connector
Use the circuit diagram as a guide to perform the following procedures:
a. Turn ignition switch to LOCK.
b. Disconnect the negative battery cable.
c. Disconnect the HVAC control panel assembly connector K-012.
d. Disconnect the left room temperature sensor connector K-011 and right room temperature sensor
connector K-001.
e. Check if wire harnesses are worn, pierced, pinched or partially broken.
f. Look for broken, bent, protruded or corroded terminals.
g. Check if related connector pins are in good condition.
Repair or replace A/C wire harness and
NG
connector
2
Check room temperature sensor
a. Remove the room temperature sensor.
b. Install the new room temperature sensor to vehicle.
c. Use X-431 3G diagnostic tester to check if DTCs are still output.
Replace room temperature sensor
NO
Chery Automobile Co., Ltd.
DTC Detection
Condition
 Room temperature sensor
 Wire harness and connector
Ignition switch ON
 HVAC control panel
31 - AIR CONDITIONING
Possible Cause
OK
YES
31–
31
29