Defrost Air Inoperative. Opel Sintra 1999

For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the entire HVAC system check performed? | -- | Go to Step 2 | Go to HVAC System Check

2

1. Place the ignition switch in the RUN position.
2. Turn the heater-A/C control to the defrost/defog position.
3. Connect a test light from the heater-A/C control connector C2 terminal F and ground.

Is the test light on?

--

Go to Step 3

Go to Step 4

3 | Replace the heater-A/C control. Refer to Control Assembly Replacement . Is the repair complete? | -- | Go to Step 10 | --
4 | Backprobe with a test light between the heater-A/C control connector C3 terminal A and ground. Is the test light on? | -- | Go to Step 5 | Go to Step 6
5 | Repair the poor connection or open in CKT 361 between the heater-A/C control connector C3 terminal A and connector C2 terminal F. Is the repair complete? | -- | Go to Step 10 | --
6 | Backprobe with a test light between the heater-A/C control connector C3 terminal B and ground. Is the test light on? | -- | Go to Step 7 | Go to Step 8

7

1. Check for a poor connection or open at the heater-A/C control connector C3 terminal B.
2. If OK, replace the heater-A/C control. Refer to Control Assembly Replacement .

Is the repair complete?

--

Go to Step 10

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8 | Backprobe with a test light between the heater-A/C control connector C2 terminal L and ground. Is the test light on? | -- | Go to Step 9 | Go to Step 3
9 | Repair the poor connection or open in CKT 454 between the heater-A/C control connector C2 terminal L and connector C3 terminal B. Is the repair complete? | -- | Go to Step 10 | --

10

1. Turn the ignition switch to the OFF position.
2. Reconnect all connectors/components disconnected.

Have all repairs been made?

--

Go to HVAC System Check

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