Check Upstream O2 Sensor Signal Circuit - Chery Tiggo 2009 Service Manual

4.
CHECK O SENSOR ELECTRICAL CONNECTOR
2
• Turn ignition switch off.
• Disconnect the O
sensor (1) electrical connector
2
E-004.
• 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.
5.
CHECK UPSTREAM O
• Disconnect ECM harness connector.
• Check harness continuity between the following terminals.
COMPONENT TERMINAL
TERMINAL
• Continuity should exist.
• Check harness for short to ground.
Is the check result normal?
Yes >>
Go to the next step.
No >>
Repair or replace circuit for an open or short to power in harness or connectors.
124
03–
DIAGNOSIS & TESTING
SENSOR SIGNAL CIRCUIT
2
ECM TERMINAL
36
18
Chery Automobile Co., Ltd.
BESM030017
O SENSOR TERMINAL
2
3
4