Chery QQ6 Service Manual download pdf (Page 83)

12.18 A/C System Failure

Yes Next step 1 Check if there is enough coolant, if the A/C belt,

the A/C clutch and the pressure switch are in

good condition.

No Troubleshooting

Yes Remove the failure

displayed

2 Let engine run at idle speed and turn on A/C

switch. Enter A/C self diagnosis mode to check

the A/C system for failure.

No Next step

Yes Next step 3 Turn on the A/C switch and connect an adaptor

between ECU and harness. Measure 75# pin

(A/C switch) of ECU and see if there are input

signals on it.

No Check the harness

Yes Replace or repair the

harness

4 If this vehicle adopts low level control, check if

the air condition is working still even though it

is turned off.

No Next step

Yes Repair the A/C

replay and harness

5 Check if there is low level output at ECU pin

No.69 (connect to the ground of pull in winding

of A/C relay).

No Replace ECU

Note: Different from the controlling means of other models, the A/C control system of A21 adopts the

automatic A/C and uses double-pressure switch to control incorporation of the A/C system and the fan

after A/C starts up.

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Chery QQ6 Service Manual Page 83