Chery A1 2009 Service Manual page 825

Check reference values between BCM terminals and ground under the following conditions:
BCM TERMINAL NO.
23
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
B1100
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, view and erase stored DTCs in the BCM.
• Turn ignition switch off.
• Turn the front dome lamp switch to DOOR position and close all the doors.
• Press the unlock button on the Remote Keyless Entry (RKE) transmitter.
• With X-431 select view active DTCs and data stream in the BCM.
• If the DTC is detected, the 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 15 Body & Accessories for more information).
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.
CHECK THE FRONT DOME LAMP FUSE
• Turn ignition switch off.
• Remove and check the front dome lamp fuse F18 (10A) in body fuse and relay box C-020.
Is the check result normal?
Yes >>
Go to the next step.
No >>
Replace the damaged fuse. Go to step 3.
NOTE : Inspect the fuses. If an open fuse is found, use the electrical schematics as a guide and inspect
the wiring and connectors for damage.
56
15–
DIAGNOSIS & TESTING
ITEM
Dome lamp
DTC DETECTION
DTC DEFINITION
Ignition switch: OFF
Turn the front dome
lamp switch to
DOOR position
Dome light control Close all the doors
circuit low voltage Press the unlock
button on the
Remote Keyless
Entry (RKE)
transmitter
CONDITION
Ignition switch: ON
Dome switch: DOOR
position
Door ajar position: OPEN
DTC SET
CONDITION CONDITION
The Body Control
Module (BCM)
detects the dome
lamp control circuit
open condition.
Chery Automobile Co., Ltd.
DATA (AVERAGE DC
VOLTAGE)
0 V
POSSIBLE CAUSE
• Dome lamp
• Harness or
connectors
• BCM