Chery A1 2009 Service Manual page 175

4.
DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect the ECM electrical connector.
• Check the harness for a short to ground between the ECT sensor connector terminal 2 and ECM connector
E-601, terminal 39.
Is the check result normal?
Yes >>
Replace the ECM.
NOTE : The Immobilizer control module must be matched to the new ECM (See ECM Removal & Instal-
lation in Section 03 Electronic Engine Controls).
No >>
Repair or replace the circuit for a short in harness or connectors.
5.
CHECK ECT SENSOR
• Check resistance between the ECT sensor terminals 1 and 2, component side:
ECT °C
-10°C
20°C
80°C
• Connect ECT sensor electrical connector.
• Connect the ECM electrical connector.
• Turn ignition switch on.
• Check sensor output signal.
ECT TERMINAL
NO.
17
39
Is the check result normal?
Yes >>
Go to the next step.
No >>
Replace ECT sensor.
68
03–
DIAGNOSIS & TESTING
ECT RESISTANCE REFERENCE DATA
RESISTANCE K
8.62 - 10.28
2.37 - 2.63
0.299 - 0.345
ECT SENSOR OUTPUT SIGNAL REFERENCE DATA
ITEM
Sensor (GND)
Ignition switch: ON
ECT sensor
CONDITION
-
ECT: 59°C
ECT: 78°C
ECT: 90°C
Chery Automobile Co., Ltd.
DATA
(DC VOLTAGE)
Approximately 0 V
1.89 V
1.25 V
0.94 V