Chery Tiggo. Manual — part 196

6.

CHECK THE ECT SENSOR

• Check resistance between ECT sensor terminal 1 and 2.

ECT°C

RESISTANCE K

⍀

0°C

5.1 - 6.5

20°C

2.1 - 2.7

40°C

0.9 - 1.3

80°C

0.26 - 0.36

• Connect ECT sensor connector.

• Connect ECM connector.

• Turn ignition switch on.

• Check sensor signal output.

TERMINAL NO.

ITEM

CONDITION

DATA (DC

VOLTAGE)

67

ECT sensor

Ignition switch: ON

ECT: 0°C

3.2 - 3.8 V

ECT: 20°C

2.3 - 2.9 V

ECT: 40°C

1.3 - 1.9 V

ECT: 80°C

0.3 - 0.9 V

76

Sensor (GND)

-

Approximately 0 V

Is the check result normal?

Yes

>>

Go to the next step.

No

>>

Replace ECT sensor.

7.

CHECK DTC

• With the X-431 scan tool, read ECM DTCs.

• Refer to ⬙DTC Confirmation Procedure⬙.

Is DTC 21 still present?

Yes

>>

Replace the ECM.

No

>>

The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.

DIAGNOSIS & TESTING

03

22 - Crankshaft Position Sensor

DIAGNOSIS & TESTING

LTSMW030012T

Check reference values between ECM terminals and ground under the following conditions:

ECM TERMINAL NO.

ITEM

CONDITION

DATA (DC Voltage)

73

Crankshaft Position (CKP)

sensor

Ignition switch: ON
Engine: Not cranking

4.8 - 5.2 V

Engine: Cranking

0.4 - 4.0 V

Engine: Idle

1.5 - 2.5 V

On Board Diagnostic Logic
• Self-diagnosis detection logic.

DTC NO.

DTC DEFINITION

DTC DETECTION

CONDITION

DTC SET

CONDITION

POSSIBLE CAUSE

22

CKP sensor

Crank engine

Signal output is no
variance for 4
seconds
continuously (no
pulse signal).

• CKP sensor

• Harness or
connectors

• Signal plate gear
tooth

• ECM

DTC Confirmation Procedure:

Before performing the following procedure, confirm that battery voltage is more than 12 V.

• Turn ignition switch off.

• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.

• Turn ignition switch on.

• With the scan tool, record and erase stored DTCs in the ECM.

• Start engine and warm it to normal operating temperature, then select view DTC and data stream.

• If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1.

• If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou-

bleshooting in Section 03 Electronic Engine Controls for more information.

NOTE :
Before performing the following procedure, make sure that the ECM connection is in good condition.

NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.

Diagnostic Procedure

1.

CHECK GROUND CONNECTION

• Turn ignition switch off.

• Loosen and retighten ground screws on the body (See Ground Inspection in Section 03 Electronic Engine Con-

trols).

• Inspect the ground connection E-208 (See Vehicle Wiring Harness Layout - Engine Room Harness (With Mit-

subishi 2.4L Engine) in Section 16 Wiring).

Is the ground connections OK?

Yes

>>

Go to the next step.

No

>>

Repair or replace ground connection.

DIAGNOSIS & TESTING

03

2.

CHECK CRANKSHAFT POSITION (CKP) SENSOR ELECTRICAL CONNECTOR

• Disconnect the CKP electrical connector (1).

• 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 CRANKSHAFT POSITION (CKP) SENSOR POWER SUPPLY CIRCUIT FOR AN OPEN OR SHORT

• Turn ignition switch on.

• Check supply voltage between CKP sensor terminal

3 and ground in the CKP sensor electrical connec-
tor E-055.

• Battery voltage should exist.

Is the check result normal?

Yes

>>

Go to step 5.

No

>>

Go to the next step.

4.

DETECT MALFUNCTIONING PART

• Check the following:

− Fuse 22, Fuse 12
− Front fuse and relay box H3
− Harness connectors A-102, E-105
− Harness open or short between CKP sensor and fuse

Is the check result normal?

Yes

>>

Go to the next step.

No

>>

Repair or replace malfunctioning parts.

DIAGNOSIS & TESTING

LTSMD030079

LTSMD030012