Chery T21 2014 Service Manual page 199

4
Check upstream oxygen sensor power supply circuit
a. Turn ignition switch to LOCK.
b. Check fuse EF39 and main relay.
c. Disconnect engine compartment fuse and relay box
connector E-076.
d. Check wire harness between upstream oxygen sensor
connector terminals and engine compartment fuse and
relay box connector terminals.
Check for Open
Multimeter
Condition
Connection
E-084 (4) - E-076
(A7)
Check for Short
Multimeter
Condition
Connection
E-084 (4) or
E-076 (A7) - Body
ground
E-084 (4) or
E-076 (A7) -
Battery positive
Replace fuse, main relay, wire harness or
NG
connector (upstream oxygen sensor -
engine compartment fuse and relay box)
Chery Automobile Co., Ltd.
Specified
Condition
Always Continuity
Specified
Condition
Always No continuity
Always No continuity
06 - SQR484F ENGINE MANAGEMENT SYSTEM
+ -
1 2 3
E-084
A1 A2 A3 A4 A5
A6 A7 A8 A9 A10
E-076
4
06
RT21065009
OK
35
06–