12V 13-PIN TOWING SOCKET TESTER - DVSA
APPROVED
MODEL NO: TST22
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these
instructions, and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY
WARNING! Ensure that Health and Safety, local authority and general workshop practice regulations are strictly adhered to when using
tools and equipment.
8 DO NOT use this tester if it, or any attachment, is damaged.
9 Maintain tester in a good, clean condition for best and safest performance.
9 Keep the work area clean, uncluttered and ensure there is adequate lighting.
9 Keep children and unauthorised persons away from the work area.
8 DO NOT use the tester for any purpose other than for which it is designed.
8 DO NOT get tester wet or use in damp or wet locations, or areas where there is condensation. Keep tester clean and dry, using a dry
cotton cloth only.
8 DO NOT dip or submerge the tester in any type of liquid.
8 DO NOT expose tester to bright sunlight or dust.
8 DO NOT dis-assemble tester. The tester must be checked by qualified service personnel only.
8 DO NOT connect or disconnect any test equipment with ignition on or engine running.
9 The tester is a precision instrument, treat with care, avoid using force and DO NOT subject to knocks or shocks.
9 Account for all tools and parts being used and do not leave any in the engine bay.
9 Keep tester dry, clean and free from oil, water and grease. Use a clean cloth to clean the outside of the tester.
9 When not in use, store tester in a safe, dry, childproof location.
WARNING! The warnings and instructions discussed in this manual cannot cover all possible conditions and situations that may occur.
It must be understood that common sense and caution are factors which cannot be built into this product, but must be applied by the
operator.
2. INTRODUCTION
DVSA Approved for use in testing stations on vehicle classes 4, 5 and 7. Quick and simple test of 12V 13-pin Euro-type sockets fitted to the rear
of the vehicle. Supplied with 4.9m cable to enable the operator to use the tool whilst sitting in the vehicle. Features self-test facility to ensure the
serviceability of the tool. Powered by 12V vehicle supply. Also tests the 12V continuous/ignition live feeds and the reversing lights - not part of the
current MOT test, but useful when diagnosing electrical faults. Includes 13 to 7-pin adaptor for testing older wiring systems.
NOTE: The self-test facility is not available when using the 13-7 pin towing adaptor, because there is no continuous feed via the 7 pin socket, from
the vehicle.
TST22 Issue 5 (1,2) 01/07/20
Original Language Version
© Jack Sealey Limited
Refer to
instructions
3. OPERATION
3.1. Lift the vehicle’s towing socket cover and insert the tester’s plug into the socket, take care
to line up with the socket before insertion. Twist the outer plug ring clockwise to lock plug
into place.
3.2. If the socket is wired for continuous 12V supply, the 12V CONTINUOUS LED should
illuminate immediately - note this is not a condition of the MOT Test.
3.3. Sit in the vehicle with the tester unit. Press ‘Test’ to ensure that the tester’s control
circuitry and the LED’s are in working order.
3.4. Turn the vehicle’s ignition switch to the ‘ON’ position, but DO NOT start the vehicle’s
engine. The 12V IGNITION LED should illuminate.
3.5. Required MOT Test checks.
Operate in turn:
- the Left and Right Hand Indicators
- the Side Lights
- the Fog Lights
- Depress the vehicle’s foot brake pedal.
In each case, check to ensure the appropriate LED illuminates on the tester.
3.6. In addition to the above MOT required checks, also select reverse gear, and check
that the LED illuminates.
3.7. When all checks are completed, remove the tester from the vehicle’s towing socket,
twisting the plug ring anti-clockwise and ease the plug assembly out of the socket.
Replace the towing socket cover.
NOTE: When testing vehicles that include a tow-bar electrics self test facility, all of the tester’s
LED’s apart from the 12V feed, may flicker. This is a function of the vehicle’s self test and is normal.
However, when testing the vehicle, the LEDs will light fully if and when voltage is being applied to each of the 13-pins on the socket, so therefore
the tester can be used as normal.
NOTE: The self-test facility is not available when using the 13-7 pin towing adaptor, because there is no continuous feed via the 7 pin socket,
from the vehicle.
Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500 01284 703534 sales@sealey.co.uk www.sealey.co.uk
ENVIRONMENT PROTECTION
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken to
a recycling centre and disposed of in a manner which is compatible with the environment. When the product becomes completely
unserviceable and requires disposal, drain any fluids (if applicable) into approved containers and dispose of the product and fluids
according to local regulations.
WEEE REGULATIONS
Dispose of this product at the end of its working life in compliance with the EU Directive on Waste Electrical and Electronic Equipment
(WEEE). When the product is no longer required, it must be disposed of in an environmentally protective way. Contact your local solid
waste authority for recycling information.
Note: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior
notice.
Important: No Liability is accepted for incorrect use of this product.
Warranty: Guarantee is 12 months from purchase date, proof of which is required for any claim.
Original Language Version
© Jack Sealey Limited
TST22 Issue 5 (1,2) 01/07/20
