GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2002 🢒 DeVille 🢒 Body and Accessories 🢒 Instrument Panel, Gages, and Console 🢒 Night Vision Display Inoperative

Step

Action

Values

Yes

No

Schematic Reference: Night Vision Schematics

1

Did you review the Night Vision Description and Operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms - Instrument Panel, Gages and Console

2
  1. Position the vehicle approximately 8 meters (25 feet) from the nearest object.
  2. Cover the lower windshield with a mat.
  3. Cover the ambient light sensor.
  4. Turn the ignition ON, with the engine OFF.
  5. Turn the headlamps ON.
  6. Turn the head-up display (HUD) ON.

Does the night vision video image appear on the windshield?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Does the night vision display warm-up logo appear when the HUD is turned ON?

--

Go to Step 4

Go to Step 9

4
  1. Turn the ignition OFF.
  2. Disconnect the night vision camera.
  3. Turn the ignition ON, with the engine OFF.
  4. With a DMM, measure the voltage from the 14 volt reference circuit to a good ground.

Does the DMM display that the voltage is at or near the specified value?

12 V

Go to Step 6

Go to Step 5

5

Test the 14 volt reference circuit for an open. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 20

6
  1. Connect a test lamp between the ignition 3 voltage circuit and the ground circuit, at terminal B (first design) or at C2 terminal B (second design) of the night vision camera.
  2. Turn the ignition ON, with the engine OFF.

Does the test lamp illuminate?

--

Go to Step 7

Go to Step 10

7

Test the night vision video high signal circuit for an open or for a short to battery voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 8

8

Test the night vision video low signal circuit for an open or for a short to battery voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 19

9
  1. Turn the ignition OFF.
  2. Install a scan tool.
  3. Turn the ignition ON, with the engine OFF.
  4. Turn the headlamps ON.
  5. With a scan tool, observe the HUD Dimming parameter in the instrument panel module (IPM) non-HVAC Data data list.

Does the HUD Dimming parameter display On?

--

Go to Step 12

Go to Step 11

10

Repair the open in the ground circuit of the night vision camera. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repairs?

--

Go to Step 25

--

11

Test the HUD active signal circuit for a short to battery voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 17

12
  1. Turn the ignition OFF.
  2. Disconnect the HUD.
  3. Turn the ignition ON, with the engine OFF.
  4. Turn the HUD ON.
  5. Connect a test lamp between the night vision on/off switch signal circuit, at the HUD, and to battery voltage.

Does the test lamp illuminate?

--

Go to Step 16

Go to Step 13

13

Test the ground circuit of the HUD for an open. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 14

14

Test the HUD active signal circuit for an open. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 15

15

Test the ignition 3 voltage circuit for an open or for a short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 20

16

Test the night vision on/off switch signal circuit for a short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 18

17

Inspect for poor connections at the harness connector of the IPM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 21

18

Inspect for poor connections at the harness connector of the HUD switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 22

19

Inspect for poor connections at the harness connector of the night vision camera. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 23

20

Inspect for poor connections at the harness connector of the HUD. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 24

21

Important: Program the replacement IPM.

Replace the IPM. Refer to Instrument Panel Module Replacement .

Did you complete the replacement?

--

Go to Step 25

--

22

Replace the HUD switch. Refer to Head Up Display Switch Replacement .

Did you complete the replacement?

--

Go to Step 25

--

23

Replace the night vision camera. Refer to Night Vision Camera Replacement .

Did you complete the replacement?

--

Go to Step 25

--

24

Replace the HUD. Refer to Head Up Display Module Replacement .

Did you complete the replacement?

--

Go to Step 25

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25

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2