B1702

DTC B1702

Circuit Description
The mirror switch contacts are the mirror switch inputs for the driver door switch (DDS). These contacts allow the DDS to detect a mirror direction request. When the mirror switch is activated to the right, left, up or down position, the DDS sends a serial data message to the DDM or PDM to command the mirror to rotate in the direction selected. The DDS monitors the switch contacts to determine how long the switch has been activated. If the DDS detects that the switch contacts are activated for greater than 30 seconds, a DTC is set.

^ DTC B1697 Mirror Left-Up Control Switch Circuit Low
^ DTC B1702 Mirror Left-Down Control Switch Circuit Low
^ DTC B1707 Mirror Right-Up Control Switch Circuit Low
^ DTC B1712 Mirror Right-Down Control Switch Circuit Low
^ DTC B1717 Mirror Power Fold Control Switch Circuit Low

Conditions for Setting the DTC
^ The DDS detects that the switch contacts are activated.
^ Condition must be present for greater than 30 seconds.

Action Taken When the DTC Set
Stores DTC B1697, B1702, B1707, B1712 or B1717 in DDS memory.

Conditions for Clearing the DTC
^ The DDS no longer detects that the switch contacts are activated for greater than 30 seconds, and:
^ The DTC is cleared using a scan tool.

Diagnostic Aids
^ The following conditions may cause an intermittent malfunction:
- The mirror switch was activated for longer than 30 seconds.
- The mirror switch is shorted internally.
^ 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 number below refers to the step number on the diagnostic table.
2. Tests for the normal state of the mirror switch using a scan tool. The scan tool will display the normal state as Idle, and Up. Down, Express Up or Express Down when the switch is activated.