Table 1: | Reference Table |
Symptom | Causes | ||||||||
---|---|---|---|---|---|---|---|---|---|
Recirculation inoperative |
| ||||||||
Always in recirculation position |
| ||||||||
Always in fresh position |
|
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: Component Connector End Views DEFINITION: Always in fresh position. | |||
1 | Did you review the Air Delivery Description and Operation and the Air Temperature Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Does the recirculation actuator operate? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Test the fresh/recirculation switch. There should be continuity between terminals 4 and 5 in the recirculation position (switch depressed) and between terminals 4 and 2 in the outside air position (switch not depressed). Did the switch test OK? | Go to Step 4 | Go to Step 8 |
4 | Test the recirculation signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 5 |
5 | Test the outside air signal circuit for a short to B+. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 6 |
6 | Inspect for poor connections at the harness connector of the recirculation actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
7 | Replace the recirculation actuator. Refer to Recirculation Actuator Replacement . Did you complete the replacement? | Go to Step 9 | -- |
8 | Replace the recirculation switch. Refer to Heater and Air Conditioning Control Replacement . Did you complete the replacement? | Go to Step 9 | -- |
9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
Table 1: | Reference Table |
Symptom | Causes | ||||||||
---|---|---|---|---|---|---|---|---|---|
Recirculation inoperative |
| ||||||||
Always in recirculation position |
| ||||||||
Always in fresh position |
|
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: Component Connector End Views DEFINITION: Always in recirculation position. | |||
1 | Did you review the Air Delivery Description and Operation and the Air Temperature Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Does the recirculation actuator operate? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Test the fresh/recirculation switch. There should be continuity between terminals 4 and 5 in the recirculation position (switch depressed) and between terminals 4 and 2 in the outside air position (switch not depressed). Did the switch test OK? | Go to Step 4 | Go to Step 8 |
4 | Test the outside air signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 5 |
5 | Test the recirculation signal circuit for a short to B+. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 6 |
6 | Inspect for poor connections at the harness connector of the recirculation actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
7 | Replace the recirculation actuator. Refer to Recirculation Actuator Replacement . Did you complete the replacement? | Go to Step 9 | -- |
8 | Replace the recirculation switch. Refer to Heater and Air Conditioning Control Replacement . Did you complete the replacement? | Go to Step 9 | -- |
9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
Table 1: | Reference Table |
Symptom | Causes | ||||||||
---|---|---|---|---|---|---|---|---|---|
Recirculation inoperative |
| ||||||||
Always in recirculation position |
| ||||||||
Always in fresh position |
|
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: Component Connector End Views DEFINITION: Recirculation inoperative. | |||
1 | Did you review the Air Delivery Description and Operation and the Air Temperature Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Does the recirculation actuator operate? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Test the fresh/recirculation switch. There should be continuity between terminals 4 and 5 in the recirculation position (switch depressed) and between terminals 4 and 2 in the outside air position (switch not depressed). Did the switch test OK? | Go to Step 4 | Go to Step 10 |
4 | Test the recirculation switch supply voltage circuit for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 5 |
5 | Test the recirculation switch ground circuit for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 6 |
6 | Test the outside air signal circuit for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 7 |
7 | Test the outside air signal circuit for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 8 |
8 | Inspect for poor connections at the harness connector of the recirculation actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 9 |
9 | Replace the recirculation actuator. Refer to Recirculation Actuator Replacement . Did you complete the replacement? | Go to Step 11 | -- |
10 | Replace the recirculation switch. Refer to Heater and Air Conditioning Control Replacement . Did you complete the replacement? | Go to Step 11 | -- |
11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |