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SeaDoo VTS Trim Module Test (1995 and Newer)

The following process will test the trim module on 1995 and newer SeaDoos without iControl to determine if it is operating within specification. A common failure with the design of the trim module is circuit board failure due to water intrusion caused by an improperly installed or faulty boot. When the boot fails, it allows water to enter the trim module and contaminate or short the internal circuits First, remove the trim module cover and inspect the motor housing for signs of water intrusion. Water intrusion into the motor housing is typically caused by a faulty trim cover seal. Inspect the seal and replace if necessary. Verify there is a good 7.5A trim fuse installed in the MPEM or Coil Box. If you hear an audible “click” when the up or down trim button is depressed, it is normally caused by a blown 7.5A trim fuse. The 7.5 amp fuse supplies power to the trim motor via the trim module. If the 7.5 amp fuse is blown, replace it and cycle the trim up and down. If the fuse blows again, remove the two wires running to the trim motor inside the trim module and cycle the trim up and down again. If the fuse blows again there is a most likely a fault in the trim module or other related wiring. If the fuse does not blow it’s most likely a faulty trim motor.

VTS Trim Module Test

These tests should be performed on the connectors and wires coming OUT of the trim module. It is not necessary to remove either the trim module or the trim motor to perform these tests. All connectors running to the trim module must be disconnected. Also, disconnect the two trim motor connectors inside the trim module motor housing


1. Trim Power Supply Wires:

Red-Purple to Black = Infinite (open circuit) for both polarities. Minimum acceptable reading is 1M Ohm. Readings between 10K-1M indicate the VTS electronics trim circuit is failing. Readings in this range indicate the trim module may work but will have a constant amp draw on the battery when not in operation. This constant amp draw will result in a drained battery.
Purple-White to Black = 10K Ohms for both polarities with the trim in the center position. 5-6K Ohms in either the full down or full up trim position.
Purple-White to Red = Infinite (open circuit) both polarities.


2. Trim Button Up & Down Input Wires:

Blue-White to Black = 32K Ohms for both polarities.
Green-White to Black = Infinite (open circuit) or 4M Ohms, depending on polarity.
Blue-White to Green = Infinite (open circuit) or 4M Ohms, depending on polarity.


3. Trim Gauge Output Wires:

Brown /white brown/black = 24.3 ohm (+/- 20%) with VTS down / 171.3 ohm with VTS up.
With trim in center positions, resistance should read 19-206 Ohms in 14.7 Ohm increments.


4. Trim Motor Wires:

Green-Orange to Blue-Orange = Either polarity, 0 Ohms

**Ohm readings may have some errors.