Shift lock relay
| Shift lock relay |
On starting, the shift lock function locks the selector lever mechanically in position P. Locking is released by depressing the brake pedal.
The shift-lock relay and its lifting magnet generate the SHIFT-LOCK function.
The relay is connected in parallel with gear selector position sensor contacts B and C to pins 10 and 28 of the transmission control module.
The shift-lock relay is fitted in the main fuse box under the main instrument unit. Due to the parallel connection mentioned above, a faulty gear selector position sensor and shift-lock relay will result in the same fault on pins 10 and 28 and thus generate the same diagnostic trouble code (P0705).
The lifting magnet is mounted in the selector lever console and controls how the selector lever can be moved. When both gear position sensors B and C are “0” , this indicates that gear position P is selected (in all other gear positions, either B or C is “1”). For the shift-lock relay to open, input R must also be “0”, which is achieved by depressing the brake pedal. When the relay opens, the lifting magnet becomes passive and the selector lever is no longer mechanically locked.
The shift-lock function can be disconnected by removing fuse 9.
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