Outlet Air Flow Is Incorrect (CJ2)
Step
| Action
| Value(s)
| Yes
| No
|
DEFINITION: Outlet air flow does not match
the requested outlet (CJ2)
|
1
|
- Disconnect the vacuum/electric solenoid connector.
- Turn the ignition switch to the ON position.
- Connect a DMM between terminal 6 (CKT 41) of the vacuum/electric
solenoid connector and a good ground.
- Measure the available voltage at the connector.
Is the voltage within the specified values?
| 10.0-14.0V
|
Go to Step 5
|
Go to Step 2
|
2
| Check the HVAC MiniFuse®
#18 for an open circuit.
Is the fuse open?
| --
|
Go to Step 3
|
Go to Step 4
|
3
| Locate and repair an open or a high resistance in CKT 41 between the
instrument panel electrical center and the vacuum/electric solenoid connector.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
4
| Locate and repair an open or a high resistance in CKT 41 between the
instrument panel electrical center and the vacuum/electric solenoid connector.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
5
|
- Turn the ignition switch to the OFF position.
- Disconnect the HVAC control head.
- Vacuum/electric solenoid connector still disconnected.
- Connect a DMM between terminal 2 (CKT 1397) of the vacuum/electric
solenoid connector and terminal D10 of the HVAC control head connector.
- Measure for continuity between these two terminals.
Is CKT 1397 continuous between these two connectors?
| --
|
Go to
Step 6
|
Go to Step 7
|
6
|
- Vacuum/electric solenoid connector and the HVAC control head connector
are still disconnected.
- Connect a DMM between the HVAC control head connector terminal
D10 and ground.
- Measure for continuity to ground in CKT 1397.
Is CKT 1397 shorted to ground?
| --
|
Go to Step 7
|
Go to Step 8
|
7
| Locate and repair an open or
a short to ground in CKT 1397.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
8
|
- Connect the DMM between terminal 1 (CKT 1395) of the vacuum/electric
solenoid connector and terminal D11 of the HVAC control head connector.
- Measure for continuity between these two terminals.
Is CKT 1395 continuous between these two connectors?
| --
|
Go to
Step 9
|
Go to Step 10
|
9
|
- Vacuum/electric solenoid connector and the HVAC control head connector
are still disconnected.
- Connect a DMM between the HVAC control head connector terminal
D11 and ground.
- Measure for continuity to ground in CKT 1395.
Is CKT 1395 shorted to ground?
| --
|
Go to Step 10
|
Go to Step 11
|
10
| Locate and repair an open or
a short to ground in CKT 1395.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
11
|
- Connect the DMM between terminal 5 (CKT 1396) of the vacuum/electric
solenoid connector and terminal D13 of the HVAC control head connector.
- Measure for continuity between these two terminals.
Is CKT 1396 continuous between these two connectors?
| --
|
Go to
Step 12
|
Go to Step 13
|
12
|
- Vacuum/electric solenoid connector and the HVAC control head connector
are still disconnected.
- Connect a DMM between the HVAC control head connector terminal
D13 and ground.
- Measure for continuity to ground in CKT 1396.
Is CKT 1396 shorted to ground?
| --
|
Go to Step 13
|
Go to Step 14
|
13
| Locate and repair an open or
a short to ground in CKT 1396.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
14
|
- Connect the DMM between terminal 3 (CKT 66) of the vacuum/electric
solenoid connector and terminal D9 of the HVAC control head connector.
- Measure for continuity between these two terminals.
Is CKT 66 continuous between these two connectors?
| --
|
Go to
Step 15
|
Go to Step 16
|
15
|
- Vacuum/electric solenoid connector and the HVAC control head connector
are still disconnected.
- Connect a DMM between the HVAC control head connector terminal
D9 and ground.
- Measure for continuity to ground in CKT 66.
Is CKT 66 shorted to ground?
| --
|
Go to Step 16
|
Go to Step 17
|
16
| Locate and repair an open or a short to ground in CKT 66.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
17
|
- Connect the DMM between terminal 4 (CKT 1394) of the vacuum/electric
solenoid connector and terminal D8 of the HVAC control head connector.
- Measure for continuity between these two terminals.
Is CKT 1394 continuous between these two connectors?
| --
|
Go to
Step 18
|
Go to Step 19
|
18
|
- Vacuum/electric solenoid connector and the HVAC control head connector
are still disconnected.
- Connect a DMM between the HVAC control head connector terminal
D8 and ground.
- Measure for continuity to ground in CKT 1394.
Is CKT 1394 shorted to ground?
| --
|
Go to Step 19
|
Go to Step 20
|
19
| Locate and repair an open or
a short to ground in CKT 1394.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
20
|
- Reconnect the vacuum/electric solenoid connector.
- Start the engine and allow it to idle.
- Momentarily connect a fused (15 A) jumper wire between ground
and each of the following HVAC control head connector terminals: D8, D9, D10,
D11 and D13.
When each terminal is grounded, does the corresponding vacuum/electric
solenoid respond and allow the corresponding vacuum actuator to operate?
| --
|
Go to Step 21
|
Go to Step 22
|
21
| Replace the HVAC control
head.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
22
| Replace the vacuum/electric solenoid.
Is the repair complete?
| --
| Recheck
System Operation
| --
|
