Check Upstream O2 Sensor Electrical Connector (2.0L); Check Upstream O2 Sensor Power Supply Circuit (2.0L) - Chery Tiggo 2009 Service Manual

Diagnostic Procedure
1.
CHECK GROUND CONNECTIONS
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 03 Electronic Engine Con-
trols).
• Inspect ground connections E-20 7 and E-208 mounting position (See Vehicle Wiring Harness Layout - Engine
Room Harness (With 2.0L Engine) in Section 16 Wiring).
Are the ground connections OK?
Yes >>
Go to the next step.
No >>
Repair or replace ground harness or connections.
2.
CHECK UPSTREAM O
• Disconnect the upstream O
connector.
• Inspect the electrical connector for damage.
Is the electrical connector OK?
Yes >>
Go to the next step.
No >>
Repair or replace the electrical connector
as necessary.
3.
CHECK UPSTREAM O
• Turn ignition switch on.
• Check supply voltage between O
2 and ground in the O
E-005.
• Battery voltage should exist.
Is the check result normal?
Yes >>
Go to Step 5.
No >>
Go to the next step.
274
03–
DIAGNOSIS & TESTING
SENSOR ELECTRICAL CONNECTOR
2
sensor (1) electrical
2
SENSOR POWER SUPPLY CIRCUIT
2
sensor terminal
2
sensor electrical connector
2
Chery Automobile Co., Ltd.
BESM030017
LTSMD030029