Chery Tiggo. Manual — part 197
5.
CHECK CKP SENSOR GROUND CIRCUIT FOR OPEN OR SHORT TO POWER
• Turn ignition switch off.
• Check harness continuity between following terminals.
CKP
SENSOR
TERMINAL
TERMINAL
CONTINUITY
1
Ground
Yes
• Continuity should exist.
• Also check harness for short to power.
Is the check result normal?
Yes
>>
Go to step 7.
No
>>
Go to the next step.
6.
DETECT MALFUNCTIONING PART
• Check harness for an open or short between CKP sensor and ground.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace harness or connectors.
7.
CHECK CKP SENSOR REFERENCE VOLTAGE
• Turn ignition switch on.
• Check voltage between CKP sensor terminal 2 and ground.
• 4.8 - 5.2 V should exist.
Is the check result normal?
Yes
>>
Go to step 9.
No
>>
Go to the next step.
DIAGNOSIS & TESTING
03
8.
CHECK CKP SENSOR INPUT SIGNAL CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM connector.
• Check harness continuity between ECM terminal 73 and CKP sensor terminal 2.
• Continuity should exist.
• Also check harness for short to power and short to ground.
Is the check result normal?
Yes
>>
Replace the ECM.
No
>>
Repair circuit for an open or short circuit in harness or connectors.
9.
CHECK CKP SENSOR SIGNAL
• Turn ignition switch off.
• Connect ECM connector.
• Connect CKP sensor connector.
• Check sensor signal output.
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
Is the check result normal?
Yes
>>
Go to step 12.
No
>>
Go to the next step.
10.
CHECK CKP SENSOR
• Check resistance as table shown:
− Remove the sensor.
− Visually check the sensor for chipping.
− Continuity should exist.
TERMINAL NO.
RESISTANCE
⍀ (25°C)
1 & 2
Except 0 or
⬁
1 & 3
2 & 3
Is the check result normal?
Yes
>>
Replace the CKP sensor with a known good CKP sensor.
Monitor the CKP sensor signal on the KES-200 screen.
− If the CKP sensor signals were normal, the system is OK.
− If the CKP sensor signals were still irregular or missing, go to step 11.
No
>>
Replace CKP sensor.
DIAGNOSIS & TESTING
11.
CHECK GEAR TOOTH
• Visually check for chipping signal plate gear tooth.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace the signal plate.
12.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is the check result normal?
Yes
>>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
No
>>
Replace the ECM.
DIAGNOSIS & TESTING
03
23 - Camshaft Position Sensor
DIAGNOSIS & TESTING
LTSMW030011T
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