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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1407 (Door System, Mirror System & Window System) >> Diagnostic Information and Procedures >> Power Mirrors Inoperative

Power Mirrors Inoperative

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Power Mirrors Inoperative

Step Action Yes No
Schematic Reference:  Outside Mirror Schematics  
Connector End View Reference:  Power Door Systems Connector End Views  
1 Did you perform the Door Systems Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Door Systems 
2
  1. Place the mirror select switch in the left mirror position.
  2. Activate the mirror position switch in the UP, DOWN, LEFT and RIGHT directions and note the operation.
  3. Place the mirror select switch in the right mirror position.
  4. Activate the mirror position switch in the UP, DOWN, LEFT and RIGHT directions and note the operation.
Do both power mirrors operate properly?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3
  1. Install a scan tool.
  2. Monitor the mirror select switch, mirror switch horizontal and vertical data parameters.
  3. Activate the mirror select switch to the left and right mirror positions.
  4. Activate the mirror direction switch to the UP, DOWN, LEFT and RIGHT positions.
Do all of the mirror data parameters change properly with the corresponding switch activations?		 Go to Step 6  Go to Step 4 
4 Do any of the mirror data parameters change with the corresponding switch activations? Go to Step 10  Go to Step 5 
5
  1. Connect a test lamp to good ground.
  2. Backprobe the switch power circuit at the power mirror switch harness connector at the driver door module.
Does the test lamp illuminate?		 Go to Step 10  Go to Step 8 
6 With the scan tool command the inoperative mirror UP, DOWN, LEFT and RIGHT.
Does the mirror move with the corresponding scan tool command?		 Go to Step 11  Go to Step 7 
7
  1. Disconnect the inoperative mirror.
  2. Connect a test lamp between the appropriate mirror motor control circuits for the inoperative direction(s).
  3. With a scan tool, command the mirror in the inoperative direction(s).
Does the test lamp illuminate with the corresponding scan tool command?		 Go to Step 9  Go to Step 11 
8 Inspect for poor connections at the driver door module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 16  Go to Step 12 
9 Inspect for poor connections at the power mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 16  Go to Step 13 
10 Inspect for poor connections at the power mirror switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 16  Go to Step 14 
11 Inspect for poor connections at the appropriate door module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 16  Go to Step 15 
12
IMPORTANT: Perform the set up procedure for the driver door module. Refer to Service Programming System (SPS) in Programming.
Replace the driver door module. Refer to Switch Replacement - Door Lock and Side Window - Driver .Did you complete the repair?		 Go to Step 16  -
13 Replace the power mirror. Refer to Mirror Replacement .
Did you complete the repair?		 Go to Step 16  -
14 Replace the power mirror switch. Refer to Power Mirror Switch Replacement .
Did you complete the repair?		 Go to Step 16  -
15
IMPORTANT: Perform the set up procedure for the appropriate door module. Refer to Service Programming System (SPS) in Programming.
Replace the appropriate door module. Refer to Switch Replacement - Door Lock and Side Window - Driver  or Switch Replacement - Door Lock and Side Window - Passenger .Did you complete the repair?		 Go to Step 16  -
16 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
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