Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the HVAC operation and perform the necessary inspections? | -- | Go to Step 2 | |
2 |
Does the voltage measured equal the specified value? | B+ | Go to Step 3 | Go to Step 4 |
3 |
Does the voltage measured equal the specified value? | B+ | Go to Step 5 | Go to Step 6 |
4 | Use the J 39200 DMM in order to measure the voltage between terminal A11 of the underhood wiring harness junction block connector C3 and ground. Does the voltage measured equal the specified value? | B+ | Go to Step 7 | Go to Step 8 |
5 |
Does the voltage vary within the specified range? | 1-12 V | Go to Step 9 | Go to Step 10 |
6 | Repair the open in CKT 251 between the heater A/C control assembly and ground splice pack G204. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | -- |
7 | Repair the open in CKT 41 between the underhood wiring harness junction block and the heater A/C control assembly. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | -- |
8 | Replace the underhood wiring harness junction block. Refer to Underhood Fuse Block Replacement in Engine Electrical. Is the repair complete? | -- | System OK | -- |
9 |
Does the voltage vary within the specified range? | 1-12 V | Go to Step 11 | Go to Step 12 |
10 | Replace the heater A/C control assembly. Refer to LINK Control Assembly Replacement . Is the repair complete? | -- | System OK | -- |
11 | Connect the J 39200 DMM between terminal 10 of the air temperature actuator connector and ground. Does the voltage measured equal the specified value? | B+ | Go to Step 13 | Go to Step 14 |
12 | Repair the open in CKT 733 between the air temperature actuator and the heater A/C control assembly. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | -- |
13 | Use the J 39200 DMM in order to measure the voltage between terminal 7 and terminal 10 of the air temperature actuator connector. Does the voltage measured equal the specified value? | B+ | Go to Step 15 | Go to Step 16 |
14 | Repair the open in CKT 41 between the underhood wiring harness junction block and the air temperature actuator. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | -- |
15 | Replace the air temperature actuator. Refer to LINK Temperature Actuator Replacement . Is the repair complete? | -- | System OK | -- |
16 | Repair the open in CKT 251 between the air temperature actuator and ground splice pack G204. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | -- |
