For 1990-2009 cars

## DTC 036 Pass Control Assy Feedback Out of Range Buick

HVAC Components
Cell 68: Passenger Temperature Control - Buick
Handling ESD Sensitive Parts Notice

### Circuit Description

The passenger temperature control assembly receives voltage signals from the HVAC programmer. The signal voltage will vary from 5 volts (open circuit) to 0 volts (short circuit).

### Conditions for Setting the DTC

• | The ignition is ON.

• | The circuit is open or shorted.

### Action Taken When the DTC Sets

Code 036 is set.

### Conditions for Clearing the DTC

• | Using a Scan Tool .

• | A history DTC will clear when 40 consecutive IGN cycles without a malfunction.

• | HVAC battery voltage is interrupted.

### Test Description

1. Determines if the passenger temperature control is operating properly.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 |

1. Turn the ignition switch to the OFF position.
2. Disconnect the passenger temperature control.
3. Full Cold setting.
4. Measure the resistance between passenger temperature control connector terminal A and terminal B.

Refer to Testing for Continuity in Wiring Systems.

Is the resistance near the specified range?

1 K ohms

Go to Step 2

Go to Step 14

2 |

1. Set the control knob to the MID Range setting.
2. Measure the resistance between passenger temperature control connector terminal A and terminal B.

Refer to Testing for Continuity in Wiring Systems.

Is the resistance near the specified range?

5 K ohms

Go to Step 3

Go to Step 14

3 |

1. Set the control to the Full Hot setting.
2. Measure the resistance between passenger temperature control connector terminal A and terminal B.

Refer to Testing for Continuity in Wiring Systems.

Is the resistance near the specified range?

9 K ohms

Go to Step 4

Go to Step 14

4 |

1. Turn the ignition switch to the RUN position.
2. Measure the voltage between passenger temperature control harness connector terminal A and ground.

Refer to Measuring Voltage in Wiring Systems.

Does the voltage equal the specified value?

5 V

Go to Step 5

Go to Step 6

5 |

1. Turn the ignition switch to the OFF position.
2. Reconnect the passenger temperature control.
3. Turn the ignition switch to the RUN position.
4. Use a Scan Tool to clear the DTC.
5. Cycle the ignition switch from the RUN position to the OFF position several times.

Did the DTC Reset?

--

Go to Step 16

Go to Intermittents and Poor Connections

6 | Is the voltage greater than the specified value? | 5 V | Go to Step 7 | Go to Step 8
7 | Repair the short to battery in CKT 831. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
8 | Measure the voltage between passenger temperature control harness connector terminal A and DLC terminal 4. Refer to Measuring Voltage in Wiring Systems. Is voltage present? | -- | Go to Step 9 | Go to Step 10
9 | Measure the voltage between passenger temperature control harness connector terminal B and DLC terminal 4. Refer to Measuring Voltage in Wiring Systems. Is the specified voltage present? | 5 V | Go to Step 11 | Go to Step 13
10 | Measure the voltage between HVAC programmer terminal F16 and DLC terminal 4. Refer to Measuring Voltage in Wiring Systems. Is the specified voltage present? | 5 V | Go to Step 15 | Go to Step 16
11 | Repair the open in CKT 1812. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
12 | Repair the short in CKT 1812. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
13 | Check for continuity between the passenger temperature control harness connector terminal B and HVAC programmer connector terminal F9. Refer to Testing for Continuity in Wiring Systems. Is continuity present? | -- | Go to Step 16 | Go to Step 11
14 | Replace the passenger temperature control assembly. Refer to Control Assembly Replacement - Passenger . Is the replacement complete? | -- | System OK | --
15 | Repair an open in CKT 831 (DK BLU/WHT). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
16 |

1. Inspect for proper terminal contact in CKT 1812.

Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.

2. If terminal contact is OK, replace the HVAC programmer. Refer to Programmer Replacement .

Is the replacement complete?

--

System OK

--

## DTC 036 Pass Control Assy Feedback Out of Range Oldsmobile

HVAC Components
Cell 68: Passenger Temperature Control (Oldsmobile)
Handling ESD Sensitive Parts Notice

### Circuit Description

The passenger temperature control assembly receives voltage signals from the HVAC programmer. The signal voltage will vary from 5 volts (open circuit) to 0 volts (short circuit).

### Conditions for Setting the DTC

• | The ignition is ON.

• | The circuit is open or shorted.

### Action Taken When the DTC Sets

Code 036 is set.

### Conditions for Clearing the DTC

• | Using a Scan Tool .

• | A history DTC will clear when 40 consecutive IGN cycles occurred without a malfunction.

• | HVAC battery voltage is interrupted.

### Test Description

1. Determines if the passenger temperature control is operating properly.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 |

1. Turn the ignition switch to the OFF position.
2. Disconnect the passenger temperature control.
3. Full Cold setting.
4. Measure the resistance between passenger temperature control connector terminal A and terminal B.

Refer to Testing for Continuity in Wiring Systems.

Is the resistance near the specified range?

1 K ohms

Go to Step 2

Go to Step 14

2 |

1. Set the control knob to the MID Range setting.
2. Measure the resistance between passenger temperature control connector terminal A and terminal B.

Refer to Testing for Continuity in Wiring Systems.

Is the resistance near the specified range?

5 K ohms

Go to Step 3

Go to Step 14

3 |

1. Set the control to the Full Hot setting.
2. Measure the resistance between passenger temperature control connector terminal A and terminal B.

Refer to Testing for Continuity in Wiring Systems.

Is the resistance near the specified range?

9K ohms

Go to Step 4

Go to Step 14

4 |

1. Turn the ignition switch to the RUN position.
2. Measure the voltage between passenger temperature control harness connector terminal A and ground.

Refer to Measuring Voltage in Wiring Systems.

Does the voltage equal the specified value?

5 V

Go to Step 5

Go to Step 6

5 |

1. Turn the ignition switch to the OFF position.
2. Reconnect the passenger temperature control.
3. Turn the ignition switch to the RUN position.
4. Use a Scan Tool in order to clear the DTC.
5. Cycle the ignition switch from the RUN position to the OFF position several times.

Did the DTC Reset?

--

Go to Step 16

Go to Intermittents and Poor Connections

6 | Is the voltage greater than the specified value? | 5 V | Go to Step 7 | Go to Step 8
7 | Repair the short to battery in CKT 831. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
8 | Measure the voltage between the passenger temperature control harness connector terminal B and the DLC terminal 4. Refer to Measuring Voltage in Wiring Systems. Is voltage present? | -- | Go to Step 9 | Go to Step 10
9 | Measure the voltage between passenger temperature control harness connector terminal B and DLC terminal 4. Refer to Measuring Voltage in Wiring Systems. Is the specified voltage present? | 5 V | Go to Step 11 | Go to Step 13
10 | Measure the voltage between HVAC programmer terminal F16 and DLC terminal 4. Refer to Measuring Voltage in Wiring Systems. Is the specified voltage present? | 5 V | Go to Step 15 | Go to Step 16
11 | Repair the open in CKT 1704. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
12 | Repair the short in CKT 1704. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
13 | Check for continuity between passenger temperature control harness connector terminal B and HVAC programmer connector terminal F6. Refer to Testing for Continuity in Wiring Systems. Is continuity present? | -- | Go to Step 16 | Go to Step 11
14 | Replace the passenger temperature control assembly. Refer to Control Assembly Replacement - Passenger . Is the replacement complete? | -- | System OK | --
15 | Repair an open in CKT 831 (DK BLU/WHT). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
16 |

1. Inspect for proper terminal contact in CKT 1704.

Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.

2. If terminal contact is OK, replace the HVAC programmer. Refer to Programmer Replacement .

Is the replacement complete?

--

System OK

--