Chery A1 2009 Service Manual page 158

7.
CHECK THE MAP SENSOR SIGNAL
• Check MAP sensor signal between terminal 4 and ground harness side, under the following test conditions:
MAP SENSOR
ITEM
TERMINAL
NO.
MAP
4
sensor
Is the check result normal?
Yes >>
Go to step 9.
No >>
Go to the next step.
8.
CHECK OR REPLACE THE MAP SENSOR
• Check the sensor as follows:
− Remove the sensor mounting bolt.
− Remove the sensor.
− Visually check the sensor for blockage or damage, and clean the pressure port of the sensor.
Is the check result normal?
Yes >>
Replace the MAP sensor with a known good MAP sensor.
Select view DTC on the X-431 screen.
− If DTC P0105 or P0106 is not present, the system is OK.
− If DTC P0105 or P0106 is present, go to step 9.
No >>
Clean or replace the MAP sensor.
9.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure .
Is DTC P0105 or P0106 still present?
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 >>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
Chery Automobile Co., Ltd.
DIAGNOSIS & TESTING
MAP SENSOR OUTPUT SIGNAL
CONDITION
(DC VOLTAGE)
Engine
running:
Idle
Approximately
Press
accelerator
Engine:
pedal
Running
slowly
Press
accelerator approximately 4
pedal
quickly (instantaneous)
DATA
1.3 V
Up to
V
03
51
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