6 No Diagnostic Code Output (No communication with scan tool) Possible Causes
［［Note］When no communication with scan tool, it may be caused by open
ABS ECU power and diagnostic circuit.
● blown fuse
●broken diagnostic cable and loose
connector
●defective ABS ECU
●scan tool problem
Can scan tool communicate with
MK 20 ABS ECU on other vehicle?
Scan tool problem. Repair it an
check again.
Check ABS voltage supply fuse.
Replace fuse.
Is there information displayed
on scan tool screen?
Remove ABS ECU connector.
Check ABS ECU terminal 13 an
diagnostic socket
(terminal 7 in scan tool).
Check diagnostic socket voltage
and ground wire, diagnostic wire
and connection. Normal?
Repair diagnostic socket
or ABS wiring harness.
O
YES
OT OKAY
OKAY
O
O
Repair socket
Connector
or wiring harness.
YES
O
23
Chery SQR7160 series sedan ABS system－fault diagnostic and repairing
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