Step | Action | Value(s) | Yes | No | ||||||
---|---|---|---|---|---|---|---|---|---|---|
1 |
Is the action complete? | -- | Go to Step 2 | -- | ||||||
2 |
Is the airflow low or no airflow out of the heater outlet? | -- | Go to Step 3 | Go to Step 8 | ||||||
3 | Inspect for airflow out of defroster or vent outlets. Is the air flow low or no airflow out of the defroster or vent outlets? | -- | Go to Step 4 | Go to Step 15 | ||||||
4 |
Is the air flow low or no airflow out of the defroster outlets? | -- | Go to Step 5 | Go to Step 16 | ||||||
5 | Turn the blower speed from the following positions:
Does the blower motor speed increases at each speed level when blower speed is turned to HI and then decreases as the switch is moved towards LO? | -- | Go to Step 6 | Go to Step 17 | ||||||
6 |
Is the action complete? | -- | Go to Step 7 | -- | ||||||
7 |
Did you hear any airflow changes? | -- | Go to Step 25 | Go to Step 24 | ||||||
8 | Turn the blower speed from the following positions:
Does the blower motor speed increases at each speed level when blower speed is turned to HI and then decreases as the switch is moved towards LO? | -- | Go to Step 9 | Go to Step 17 | ||||||
9 |
Is the heater outlet temperature within specified value? | -- | Go to Step 18 | Go to Step 10 | ||||||
10 | Cycle the temperature door actuators (CJ4 only). Did the temperature door actuators properly function? | -- | Go to Step 11 | Go to Step 19 | ||||||
11 |
Does the inlet heater hose feel hot and the outlet heater hose feel warm? | -- | Go to Step 14 | Go to Step 12 | ||||||
12 |
Is the heater hoses location reversed? | -- | Go to Step 20 | Go to Step 13 | ||||||
13 |
Does the inlet heater hose fool hot and the outlet heater hose feel warm? | -- | Go to Step 26 | Go to Step 23 | ||||||
14 |
Is the thermostat properly installed? | -- | Go to Step 22 | Go to Step 21 | ||||||
15 |
Is the action complete? | -- | Go to Step 26 | -- | ||||||
16 |
Is the action complete? | -- | Go to Step 26 | -- | ||||||
17 |
Is the action complete? | -- | Go to Step 26 | -- | ||||||
18 |
Is the action complete? | -- | Go to Step 26 | -- | ||||||
19 | Repair or replace the temperature door stepper motors. Is the action complete? | -- | Go to Step 26 | -- | ||||||
20 | Reinstall the heater hoses in correct location. Is the action complete? | -- | Go to Step 26 | -- | ||||||
21 | Reinstall the thermostat. Is the action complete? | -- | Go to Step 26 | -- | ||||||
22 | Replace the thermostat. Is the repair complete? | -- | Go to Step 26 | -- | ||||||
23 | Replace the heater core. Is the repair complete? | -- | Go to Step 26 | -- | ||||||
24 |
Is the action complete? | -- | Go to Step 26 | -- | ||||||
25 |
Is the action complete? | -- | Go to Step 26 | -- | ||||||
26 | Perform the functional test. Refer to Functional Check . Is the action complete? | -- | System OK | -- |