Chery T21 2014 Service Manual page 1311

DTC
C1901 Battery Under Voltage Error
C1902 Battery Over Voltage Error
CAUTION
 When performing the circuit diagnosis and test, always refer to the circuit diagram for the specific circuit
and the component information.
Diagnosis Procedure
1
Check battery
a. Check if battery voltage is normal.
Recharge or replace battery
NG
2
Check battery terminals
a. Check if battery terminals are loose or corroded.
Tighten or replace battery terminals
NG
3
Check EPS ground point
a. Turn ignition switch to LOCK.
b. Check EPS ground point E-081.
Repair or replace ground wire harness or
NG
ground point
Chery Automobile Co., Ltd.
DTC Definition
30 - ELECTRONIC POWER STEERING
Possible causes
 Fuse
 Wire harness or connector
 Battery
 Battery terminal
 EPS booster assembly
30
OK
OK
OK
13
30–