1997 Toyota T100 Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Cruise Control System DTCS

CRUISE CONTROL SYSTEM DTCS

OEM Code Test Procedures Description
12 21(2), (3) Open In Actuator Motor Circuit
12 21(2), (3) Short In Actuator Motor Circuit
14 2(2), (3) Actuator Mechanical Malfunction
21 3(2), (3) Vehicle Speed Sensor Signal Is Not Sent To CC ECU When Cruise Control Is Set
23 (4) 3(2), (3) Vehicle Speed Sensor Signal Abnormal
32 45(2), (3) Short In Control Switch Circuit
Normal None Indicator Light Flashes On & Off
(1) Perform test numbers in order given.
(2) Check wiring harness and connectors.
(3) Check CC ECU. See PIN VOLTAGE TESTS Replace CC ECU as necessary.
(4) If speed set can be maintained when cruise ON-OFF (main) switch is again set to SET/COAST position, there is no malfunction.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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