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Power Mirrors - Memory Functions Inoperative

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Power Mirrors - Memory Functions Inoperative

Step Action Yes No
Schematic Reference: Door Control Module 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 Verify that the power mirrors memory functions inoperative fault is present.
Does the power mirrors memory system operate normally?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Are both memory mirrors inoperative? Go to Step 4  Go to Step 5 
4
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Observe the Memory 1 Select Switch and Memory 2 Select Switch parameters in the Left Door Control Module data list.
  4. Actuate the Memory 1 and Memory 2 switches.
Does the scan tool display Inactive?		 Go to Step 6  Go to Step 9 
5
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Observe the appropriate Position Sensor Ref parameter in the appropriate Door Control Module data list.
Is the position sensor ref parameter value less than 4.0 volts?		 Go to Step 9  Go to Step 7 
6 Test the appropriate memory select switch signal circuit for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 15  Go to Step 10 
7 Test the appropriate mirror 5 volt reference circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 15  Go to Step 8 
8 Test the appropriate mirror low reference circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 15  Go to Step 11 
9 Inspect for poor connections at the harness connector of 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 15  Go to Step 12 
10 Inspect for poor connections at the harness connector of the driver door 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 15  Go to Step 13 
11 Inspect for poor connections at the harness connector of the appropriate outside rearview 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 15  Go to Step 14 
12 Replace the appropriate door module. Refer to Door Control Module Replacement .
Did you complete the replacement?		 Go to Step 15  -
13 Replace the driver door switch. Refer to Front Door Switch Replacement .
Did you complete the replacement?		 Go to Step 15  -
14 Replace the appropriate outside rearview mirror. Refer to Mirror Replacement .
Did you complete the replacement?		 Go to Step 15  -
15 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
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