Town & Country LWB FWD V6-3.8L VIN L (1999)
Power Mirror Switch: Testing and Inspection
Side View Mirror Switch - Stuck
The Side View Mirror Switch in the instrument panel has normally open contacts when in its inactive state. The left/right rocker switch has a center- off
detent. If this switch is actuated to either side, it then becomes connected to the P73 I P70, circuits which are the mirror motor common connections. No
faults will result from this action by itself. If one of the other switch contacts from the round portion of the switch becomes accidentally closed, It can
cause problems such as both mirrors operating at the same time in the vertical or horizontal modes.
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Turn ignition switch ON: If two mirror switch contacts, from the round portion, are stuck in the closed position, and the left/right portion is
actuated to either side, a mirror motor will become actuated.
This will drive the motor to its stop, where it will keep ratcheting until a switch contact is released or the ignition is turned to OFF. Replace the mirror
switch assembly to correct this condition.
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With the ignition switch in the ON or the OFF position: If only one mirror switch contact is stuck in the closed position, the mirror motor will not
become actuated. During an ignition switch recall of a driver 5 chosen position, the MSMM will attempt to drive the mirror motor only if:
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The closed switch contact was the same as the desired direction
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Until the lack of a signal seen by the MSMM shuts off the drive to the motor.
The MSMM will shut off the drive to the desired motor. It is possible that a single stuck contact could place an opposite mirror or direction into a series
connection. This would run the connected motors at approximately half speed. Replace the mirror switch assembly to correct this condition.
Mirror Mechanization
Mirror Mechanization Table
The 25-way connector at the MSMM (under the driver's seat) and the mirror mechanization show that both mirrors use the same functions. The rheostat
for position sensing utilizes the wire from the module to the mirror as both feed and sense line on the same wires, D and F. The ground return wire, E,
stands alone. Refer to the Mirror Mechanization Table.
The mirror motors for each side use a common connection, B, which becomes automatically connected to the proper polarity power connection during
either manual (through the mirror switch) or recall (through the MSMM) modes of operation.
