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volvo overdrive problems 200 1988

uid 18083's pic
posted by  lucid on  Tue Aug 16 08:04 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

The wire for back-up lights doesn't come from the (auto) tranny. The switch is in the shifter, along with the Neutral/Park safety switches. I don't believe it goes under the car at all (no reason to).

Your mechanic may have done something to the solenoid wire though. The circuit outline and summary below may help you analyze the problem.

======>
OD operation involves 5 components and the wiring that connects them...

1) Fuse 11 (200) or 12 (700/900) supplies voltage to items #2, #3, #4, and #5

2) The Shifter button/switch turns the OD relay off and on

3) The OD relay controls the Upshift (not "OD") Arrow light and Solenoid (separate wires)

4) The Upshift Arrow light ON means the relay and OD are OFF

5) The OD solenoid allows OD engagement when ON, (the "default" Relay state at Key On)

If the Shifter switch turns the Arrow light (#4) on and off, then items 1, 2, and 3 are OK, and the problem is most likely the undercar wire to the Solenoid (#5) or the wire connector terminal at the solenoid.
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