Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Is ground present? | -- | Go to Step 2 | Go to Step 3 |
2 | Replace the blower resistor. Refer to in Blower Motor Resistor Replacement . Is the repair complete? | -- | System OK | -- |
3 | Test the switch output medium-1 circuit at the hvac control assembly for continuity to ground. Refer to Circuit Testing in Wiring Systems. Is ground present? | -- | Go to Step 4 | Go to Step 5 |
4 | Repair open in the switch output medium-1 circuit. Refer to Circuit Testing in Wiring Systems. Is the repair complete? | -- | System OK | -- |
5 | Test the ground circuit at the hvac control assembly for continuity to ground. Refer to Circuit Testing in Wiring Systems. Is ground present? | -- | Go to Step 6 | Go to Step 7 |
6 | Replace the hvac control assembly. Refer to Control Assembly Replacement . Is the repair complete? | -- | System OK | -- |
7 | Repair open in the ground circuit. Refer to Circuit Testing in Wiring Systems. Is the repair complete? | -- | System OK | -- |
