# Service bulletin TC01021 A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned. - Type: Service bulletin - NHTSA id: 624524 - Published by NHTSA: 2001\-11\-07 - Manufacturer's number: TC01021 - Manufacturer's date: 2001\-08\-13 - NHTSA component: ELECTRICAL SYSTEM ## NHTSA's summary INFORMATION REGARDING TRAILER TOWING WIRE HARNESS CONVERTER REPLACEMENT.\*JB ## The document No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number. ## Components Electrical system ## Vehicles listed - 1999 to 2000 TOYOTA TACOMA - 2000 TOYOTA TUNDRA ## Other bulletins for the same vehicles and component - [TSB018217](/bulletins/10152205.md), 2018-12-17, Service bulletin: ELECTRICAL SYSTEM. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes SB No. T\-SB\-0101\-11. Applicability has been updated to include 2016 ? 2017 model year vehicles. Service Bulletin No. T\-SB\-0101\-11 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals contain silicone or other compounds that may contaminate electrical contacts, and therefore increase electrical resistance and decrease switch performance. The use of any cleaners or fluids may increase the risk of further damage to electrical components. - [T\-TT\-0362\-15](/bulletins/10134223.md), 2018-04-23, Service bulletin: ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted. - [T\-SB\-0229\-12\_Rev](/bulletins/10133654.md), 2018-04-23, Service bulletin: ELECTRICAL SYSTEM. TSB: REVISION NOTICE November 22, 2017 Rev1: ? Applicability has been updated to include 2014 ? 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. In the event that a Toyota vehicle becomes submerged in water, many components may be physically damaged. Electrical and electronic components, including wiring harnesses, are particularly susceptible to corrosion and subsequent malfunction. Although any flooding can be damaging, salt water flooding elevates the potential for abnormal conditions and may increase risks due to its highly corrosive and conductive nature. Salt residue also continues to corrode and remain conductive even after a vehicle dries. This bulletin is intended to assist with safe handling and inspection of flood damaged vehicles and to provide basic guidance on likely needed repairs. - [T\-TT\-0086\-11](/bulletins/10132529.md), 2018-04-02, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE. TechTip: Condition \- The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted. - [T\-SB\-0101\-11 Rev](/bulletins/10111390.md), 2017-08-14, Service bulletin: ELECTRICAL SYSTEM. TSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals contain silicone or other compounds that may contaminate electrical contacts, and therefore increase electrical resistance and decrease switch performance. The use of any cleaners or fluids may increase the risk of further damage to electrical components. - [T\-SB\-0101\-11 Rev](/bulletins/10111197.md), 2017-08-14, Service bulletin: EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. TSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals contain silicone or other compounds that may contaminate electrical contacts, and therefore increase electrical resistance and decrease switch performance. The use of any cleaners or fluids may increase the risk of further damage to electrical components. - [T\-TT\-0362\-15](/bulletins/10096556.md), 2017-03-28, Service bulletin: ELECTRICAL SYSTEM; ENGINE. TT: THE VEHICLE MAY BE DIFFICULT TO START OR HAVE AN ABNORMALLY LOW OR ROUGH IDLE AFTER THE BATTERY HAS BEEN DISCONNECTED OR POWER TO THE ENGINE ECM HAS BEEN INTERRUPTED. - [5269](/bulletins/10018661.md), 2006-01-10, Service bulletin: ELECTRICAL SYSTEM:WIRING. REPAIR MANUAL CORRECTION FOR THE REAR DIFFERENTIAL LOCK \- ELECTRICAL WIRING DIAGRAM. 00400\-EWD47\-8U. '02 TACOMA. \*TT '03 TACOMA. 00400\-EWD51\-7U. \*TT '04 TACOMA \- 00400\-EWD56\-5U. \*TT '01 TACOMA. 0040\-EWD44\-0U. \*TT '00 TACOMA \- 00400\-EWD38\-5U. \*TT '00 TACOMA \- 00400\-EWD36\-4U. '99 TACOMA \- 00400\-EWD36\-4U. \*TT - [3295](/bulletins/10006510.md), 2004-05-04, Service bulletin: ELECTRICAL SYSTEM:WIRING. REPAIR MANUAL CORRECTION FOR THE SRS \- OVERALL. ELECTRICAL WIRING DIAGRAM. \*TT - [01703](/bulletins/10005754.md), 2004-03-15, Service bulletin: ELECTRICAL SYSTEM. OIL PRESSURE GAUGE READS ABNORMALLY LOW AT IDLE. \*TT JSON: [/v1/bulletins/624524](/v1/bulletins/624524) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20TC01021&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F624524&vehicle=Service%20bulletin%20TC01021)