Failure In Driver Stage Of Malfunction Indicator Lamp (Mil) - Chery QQ6 Service Manual

11.9 Failure in Driver Stage of Malfunction Indicator Lamp (MIL)

Failure codes: P1677, P1678, P1679
No.
Put the ignition switch to "ON"
1
2 Disassemble the dashboard, and then use a
multimeter to check if it is break or short circuit
between 29#, 30# pins at instrument end and 62#,
81# pins of ECU.
3 Replace the instrument and then check if it is
normal
4 Replace ECU, and then re-check if it works
normally.
5 Check CAN circuit for the place where is
grounding or short.
Note: The malfunction indicator lamp is controlled by ECU. When a failure occurs in
the system, ECU will control the malfunction indicator lamp to light. There are two
kinds of malfunction indicator lamps on this auto (engine failure indicator lamp and
EPC), but the engine failure indicator lamp on the instrument may be shielded in the
system, that is, when a failure occurs, EPC lamp will light, which should be noted
during maintenance process.
Operating steps Result Follow up steps
Next step
Yes Check the circuit
No Next step
Yes Next step
No Replace the
instrument
Yes Replace ECU
No Check other part
Yes Replace the harness
No Check other part