Circuit Description
The driver door module (DDM) and the passenger door module (PDM) receive mirror position signals from the mirror horizontal and vertical position sensors. These signals are used by the door modules for memory recall functions of the driver and passenger mirrors. The door modules command the mirror memory settings based upon the voltage level received back from the position sensors. Each door module provides a 5 volt supply, a signal and a ground circuit for each of the position sensors. The horizontal and vertical position sensors are variable resistors that the door modules monitor voltage levels across. When a memory setting is recalled, the door modules command the mirror motors in the appropriate directions until the stored position sensor voltage levels are achieved. The DDM and PDM monitor the signal circuits to determine if the voltage level is out of range. If the DDM or PDM detects a voltage level out of range for greater than 2 seconds, a DTC is set.
Conditions for Setting the DTC
| • | The DDM or PDM detects a mirror position sensor signal voltage range under 0.1 volts or over 4.78 volts. |
| • | Condition must be present for greater than 2 seconds. |
Action Taken When the DTC Sets
| • | Stores a history DTC B2262, B2263, B2264 or B2265 in the DDM or PDM memory. |
| • | These DTCs can only be set as a history code even if the malfunction is current. |
| • | No driver warning message will be displayed for this DTC. |
Conditions for Clearing the DTC
| • | The DDM or PDM detects the correct mirror horizontal and vertical position sensor signal voltage range (0.1-4.78 volts) for longer than 2 seconds, and: |
| • | The DTC is cleared using the IPC clearing feature, or |
| • | The DTC is cleared using a scan tool. |
Diagnostic Aids
| • | An intermittent malfunction may be caused by an intermittent open or short to ground in a mirror signal circuit. |
| • | If the DTC does not reset after the code is cleared, then the problem may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
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This tests the mirror position sensor signal voltage using a scan tool. Normal signal voltage range is between 0.1-4.78 volts.
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This tests the mirror position sensor signal voltage using a scan tool with the mirror disconnected. Normal signal voltage range with the mirror disconnected is greater than 4.78 volts.
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This tests the mirror position sensor signal voltage using a scan tool with the signal circuit jumpered to the sensor ground circuit. Normal signal voltage range with the sensor jumpered to ground is less than 0.1 volt.
Step | Action | Value(s) | 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 | |
Does the scan tool indicate that the mirror position parameter is within the specified range? | 0.1-4.78 V | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | |
Does the scan tool indicate that the mirror position parameter is greater than the specified value? | 4.78 V | Go to Step 4 | Go to Step 5 | |
Does the scan tool indicate that the mirror position parameter is less than the specified value? | 0.1 V | Go to Step 7 | Go to Step 6 | |
5 | Test the appropriate mirror position signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 8 |
6 | Test the appropriate mirror position signal circuit for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 8 |
7 | Inspect for poor connections at the harness connector of the appropriate 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 11 | Go to Step 9 |
8 | 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 11 | Go to Step 10 |
9 | Replace the appropriate mirror. Refer to Outside Rearview Mirror Replacement . Did you complete the replacement? | -- | Go to Step 11 | -- |
10 | Replace the appropriate door module. Refer to Door Control Module Replacement . Did you complete the replacement? | -- | Go to Step 11 | -- |
11 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
