LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2007 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Displays And Gages >> Diagnostic Information and Procedures >> Mirrors Compass Display Inoperative or Inaccurate

Mirrors Compass Display Inoperative or Inaccurate

Mirrors Compass Display Inoperative or Inaccurate

Step Action Yes No
Schematic Reference: Inside Rearview Mirror Schematics
Connector End View Reference: Mirror Connector End Views
1 Did you review the compass operation of the inside rearview mirror and perform the necessary inspections? Go to Step 2  -
2 Does the automatic day-night feature of the inside rearview mirror operate correctly? Go to Step 3  Go to Automatic Day-Night Mirrors Inoperative
3
  1. Turn ON the ignition, with the engine OFF.
  2. Turn ON the compass.
  3. Verify that the compass has one of the following conditions:
    • An incorrect reading on the display.
    • The letter C or CAL is displayed.
    • The compass display is blank.
Does the compass have one of the conditions mentioned above?
Go to Step 4  Go to Testing for Intermittent Conditions and Poor Connections
4 Is the compass display totally blank? Go to Step 8  Go to Step 5 
5 Is the letter C or CAL displayed on the mirror? Go to Step 6  Go to Step 7 
6 Perform the compass calibration procedure. Refer to Compass Calibration and Magnetic Variance .
Is the compass accurate and operating properly?
Go to Step 10  Go to Step 7 
7 Perform the compass magnetic variation adjustment procedure. Refer to Compass Calibration and Magnetic Variance .
Is the compass accurate and operating properly?
Go to Step 10  Go to Step 8 
8 Inspect for a poor connection at the harness connector of the inside rearview mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 10  Go to Step 9 
9 Replace the inside rearview mirror. Refer to Control Module References for replacement, setup, and programming and Rearview Mirror Replacement .
Did you complete the replacement?
Go to Step 10  -
10 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 3