Chery T21 2014 Service Manual page 907

DTC Code DTC Definition
TCM Power Relay
P0890
Sense Circuit Low
TCM Power Relay
P0891
Sense Circuit High
DTC Confirmation Procedure:
Confirm that battery voltage is between 11 and 14 V before performing the following procedures.
 Turn ignition switch to LOCK.
 Connect X-431 3G diagnostic tester (the latest software) to Data Link Connector (DLC), and make it
communicate with vehicle electronic module by the data network.
 Turn ignition switch to ON.
 Using X-431 3G diagnostic tester to record and clear the DTCs stored in the TCU.
 Turn ignition switch to LOCK and wait for a few seconds.
 Turn ignition switch to ON, and then select "Read Code".
 If DTC is detected, the malfunction indicated by the DTC is current. Go to the diagnosis procedure - Step 1.
 If DTC is not detected, the malfunction indicated by the DTC is intermittent. Please refer to Intermittent
DTC Troubleshooting.
Diagnosis Procedure
HINT:
After the fault is eliminated, verify DTC and symptom again.
1
Check if TCU power fuse EF19 and EF46 are normal
Replace failed fuse
NG
2
Check if battery to fuse box TCU fuse and relay circuit are normal
Repair or replace failed circuit
NG
Chery Automobile Co., Ltd.
DTC Detection
Condition
TCU power
command is
sent, solenoid
output feedback
voltage is less
than the
standard value
Start engine and wait
for at least 10 seconds
TCU power
command is not
sent, solenoid
output feedback
voltage is higher
than the
standard value
18 - QR019CHB CVT
DTC Set
Possible Cause
Condition
 Solenoid circuit
open circuit or
short circuit
 TCU power relay
failure
18
OK
OK
73
18–