Document ID# 329062
1999 Oldsmobile Intrigue
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Air Temperature Control Inoperative
Step
Action
Value(s)
Yes
No

1
Was the heater-A/C control Diagnostic System Check performed?
--
Go to Step 2
Go to Diagnostic System Check

2
Inspect the HVAC fuse in the fuse block.

Is the HVAC fuse open?
--
Go to Step 3
Go to Step 4

3
Repair short to ground in circuit 41 (BRN).

Is the repair complete?
--
System OK
--

4
Turn the ignition switch off.
Disconnect the driver (left ) electric actuator electrical connector.
Turn the ignition switch on.
Use a digital multimeter (DMM) in order to measure the voltage between the
left electric actuator harness connector terminal 5 and ground. Is the
measured voltage within the specified range?
9-14V
Go to Step 6
Go to Step 5

5
Repair the poor connection or open in circuit 41 (BRN).

Is the repair complete?
--
System OK
--

6
Use a DMM in order to measure the voltage between the left electric
actuator harness connector terminal 6 and ground.
Vary the driver temperature knob from full cold to full hot.
Does the voltage vary within the specified range?
0.5-4.5V
Go to Step 7
Go to Step 8

7
Replace the left electric actuator. Refer to Temperature Actuator
Replacement .

Is the repair complete?
--
System OK
--

8
Inspect for a short to ground or short to B+ in circuit 1199 (DK BLU).

Is there a short to ground or short to B+ in circuit 1199 (DK BLU)?
--
Go to Step 9
Go to Step 10

9
Locate and repair the short to ground or the short to B+ in circuit 1199
(DK BLU).

Is the repair complete?
--
System OK
--

10
Inspect for a poor connection or open in circuit 1199 (DK BLU) between the
heater-A/C control harness connector terminal C7 and the left electric
actuator harness connector terminal 6.

Is there continuity in circuit 1199 (DK BLU)?
--
Go to Step 11
Go to Step 12

11
Repair the poor connection or open in circuit 1199 (DK BLU) between the
heater-A/C control harness connector terminal C7 and the left electric
actuator harness connector terminal 6.

Is the repair complete?
--
System OK
--

12
Replace the heater-A/C control. Refer to Control Assembly Replacement .

Is the repair complete?
--
System OK
--