Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
1 | Check the fuse B3-B4 in the fuse block. Is the fuse open? | -- | Go to Step 2 | Go to Step 3 |
2 | Locate and repair a short to ground in circuit 41. Is the repair complete? | -- | Go to HVAC Air Delivery System Check ) | -- |
3 |
Does the test light illuminate? | -- | Go to Step 5 | Go to Step 4 |
4 | Repair a poor connection or an open in circuit 41. Is the repair complete? | -- | -- | |
5 |
Is the measured voltage within the specified range? | 9-14V | Go to Step 9 | Go to Step 6 |
6 | Check for poor connection or open in circuit 362. Is there a poor connection or open in circuit 362? | -- | Go to Step 7 | Go to Step 20 |
7 | Repair poor connection or open in circuit 362. Is the repair complete? | -- | -- | |
8 | Using a DMM, measure the voltage between B+ and the vacuum/electric solenoid harness connector terminal 4. Is the measured voltage within the specified value? | 9-14V | Go to Step 11 | Go to Step 9 |
9 | Check for poor connection or open in circuit 363. Is there a poor connection or open in circuit 363? | -- | Go to Step 10 | Go to Step 20 |
10 | Repair poor connection or open in circuit 363. Is the repair complete? | -- | -- | |
11 | Using a DMM, measure the voltage between B+ and the vacuum/electric solenoid harness connector terminal 5. Is the measured voltage within the specified value? | 9-14V | Go to Step 14 | Go to Step 12 |
12 | Check for poor connection or open in circuit 706. Is there a poor connection or open in circuit 706 | -- | Go to Step 13 | Go to Step 20 |
13 | Repair poor connection or open in circuit 706 Is the repair complete? | -- | -- | |
14 |
Is the measured voltage within the specified value? | 9-14V | Go to Step 17 | Go to Step 15 |
15 | Check for poor connection or open in circuit 366. Is there a poor connection or open in circuit 366? | -- | Go to Step 16 | Go to Step 20 |
16 | Repair poor connection or open in circuit 366. Is the repair complete? | -- | -- | |
17 | Using a DMM, measure the voltage between B+ and the vacuum/electric solenoid harness connector terminal 3. Is the measured voltage within the specified value? | 9-14V | Go to Step 21 | Go to Step 18 |
18 | Check for poor connection or open in circuit 361. Is there a poor connection or open in circuit 361? | -- | Go to Step 19 | Go to Step 20 |
19 | Repair poor connection or open in circuit 361. Is the repair complete? | -- | -- | |
20 | Replace the HVAC control assembly Refer to Control Assembly Replacement Is the repair complete? | -- | -- | |
21 |
Is the measured voltage within the specified value? | 9-14V | Go to Step 22 | Go to Step 24 |
22 | Check for a short to ground in circuit 366. Is there a short to ground on circuit 366? | -- | Go to Step 23 | Go to Step 20 |
23 | Repair short to ground in circuit 366. Is the repair complete? | -- | -- | |
24 | Using a DMM, measure the voltage between B+ and the vacuum/electric solenoid harness connector terminal 2. Is the measured voltage within the specified value? | 9-14V | Go to Step 25 | Go to Step 27 |
25 | Check for a short to ground in circuit 362. Is there a short to ground on circuit 362? | -- | Go to Step 26 | Go to Step 20 |
26 | Repair short to ground in circuit 362. Is the repair complete? | -- | -- | |
27 | Using a DMM, measure the voltage between B+ and the vacuum/electric solenoid harness connector terminal 3. Is the measured voltage within the specified value? | 9-14V | Go to Step 28 | Go to Step 30 |
28 | Check for a short to ground in circuit 361. Is there a short to ground in circuit 361? | -- | Go to Step 29 | Go to Step 20 |
29 | Repair short to ground in circuit 361. Is the repair complete? | -- | -- | |
30 | Using a DMM, measure the voltage between B+ and the vacuum/electric solenoid harness connector terminal 4. Is the measured voltage within the specified value? | 9-14V | Go to Step 31 | Go to Step 33 |
31 | Check for a short to ground in circuit 363. Is there a short to ground in circuit 363? | -- | Go to Step 32 | Go to Step 20 |
32 | Repair short to ground in circuit 363. Is the repair complete? | -- | -- | |
33 | Using a DMM, measure the voltage between B+ and the vacuum/electric solenoid harness connector terminal 5. Is the measured voltage within the specified value? | 9-14V | Go to Step 34 | Go to Step 36 |
34 | Check for a short to ground in circuit 706. Is there a short to ground on circuit 706? | -- | Go to Step 35 | Go to Step 20 |
35 | Repair short to ground in circuit 706. Is the repair complete? | -- | -- | |
36 | There is a fault in vacuum/electric solenoid, vacuum source, vacuum actuators, vacuum hoses to actuators, linkage from actuators to values, or faulty valves. Refer to Vacuum System for further diagnosis. Is the action complete? | -- | -- |