Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

When the fault is no longer present, the door module changes the current DTC to a history DTC. The door module will clear the history DTC after 50 fault free ignition cycles, or in response to a scan tool command.

DTC B1544, B1600, or B1605

Step	Action	Yes	No
Schematic Reference: Outside Rearview Mirror Schematics Connector End View Reference: Mirror Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Turn ON the ignition, with the engine OFF. Activate the mirror switch in the up, down left and right positions. Does the mirror move properly with each activation?	Go to Testing for Intermittent Conditions and Poor Connections	Go to Step 3
3	Turn OFF the ignition. Disconnect the mirror from the appropriate door module. Turn ON the ignition, with the engine OFF. Probe each of the mirror motor down, right and up/left control circuit pins at the door module one at a time with a test lamp that is connected to a good ground. Did the test lamp illuminate at any of the test points?	Go to Step 7	Go to Step 4
4	Connect a test lamp between the mirror motor down control circuit pin and a good ground. Activate the mirror switch to the down position. Does the test lamp illuminate?	Go to Step 5	Go to Step 8
5	Connect a test lamp between the mirror motor right control circuit pin and a good ground. Activate the mirror switch to the right position. Does the test lamp illuminate?	Go to Step 6	Go to Step 8
6	Connect a test lamp between the mirror motor up/left control circuit pin and a good ground. Activate the mirror switch to the up and left positions. Does the test lamp illuminate?	Go to Step 7	Go to Step 8
7	Inspect for poor connection at the harness connector of the appropriate door module. Refer to Testing for Intermittent Conditions and Poor Connections . Did you find and correct the conditions?	Go to Step 10	Go to Step 9
8	Replace the appropriate door module. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement?	Go to Step 10	-
9	Replace the mirror. Refer to Mirror Replacement . Did you complete the replacement?	Go to Step 10	-
10	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	Go to Step 2	System OK