Chery Tiggo 2009 Service Manual page 431

9.
DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between following terminals.
INJECTOR NO.
TERMINAL
1
2
3
4
• Continuity should exist.
Is the check result normal?
Yes >>
Go to the next step.
No >>
Repair circuit for an open in harness or connectors.
10.
CHECK INJECTOR RESISTANCE
• Check fuel injector resistance between the following terminals.
INJECTOR INJECTOR
NO. TERMINAL
1 1 & 2
2 1 & 2
3 1 & 2
4 1 & 2
• Check sensor signal output.
• Connect ECM connector.
• Connect injector connector.
• Check fuel injector voltage between the following terminals and ground.
TERMINAL NO.
6
7
27
47
Chery Automobile Co., Ltd.
DIAGNOSIS & TESTING
ECM INJECTOR
TERMINAL
27 2
6 2
7 2
47 2
RESISTANCE
(APPROXIMATELY)
(20°C)
12
ITEM
Injector
CONDITION
• Engine is running
• Warm-up condition
• Idle
• Accelerate suddenly
DATA (AVERAGE DC
VOLTAGE)
Voltage: 11 - 14 V
147
03–
03