Retrieving Codes Using Voltmeter

1994 Plymouth Colt Vista Base, 2.4 G, AutomaticSECTION Retrieving Codes Using Voltmeter
WARNING: This page is about a different car, the 1994 Mitsubishi 3000GT and 1994 Dodge Stealth. However, it is still accessible from the selected car via links, so may be relevant.
  1. With ignition off, connect voltmeter positive probe to terminal No. 3 of self-diagnostic connector, located under right side of dash. See Fig 1 . Connect voltmeter negative probe to terminal No. 4 or 5 of self-diagnostic connector.
  2. Turn ignition on. Voltage signals generated are read as needle sweeps. The needle sweep range is 0-12 volts. Longer duration pulses are recorded as the tens digit of code, and shorter duration pulses are recorded as ones digit of code. Codes are separated by a pause.
  3. Read and record self-diagnostic (trouble) codes on basis of deflection of voltmeter needle. See TROUBLE CODE IDENTIFICATIONΒ  table. Proceed to appropriate CODE test for diagnosis and servicing procedure. If 2 or more trouble codes are stored, lowest number code will be indicated first. After repairs are complete, erase trouble codes. See CLEARING CODESΒ  .
Fig 1: Connecting Voltmeter To Self-Diagnostic Connector
G94G46272Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
TROUBLE CODE IDENTIFICATION

Code Description
11 "G" Sensor
14 Throttle Position Sensor (TPS)
21 Steering Wheel Sensor
24 Vehicle Speed Sensor (VSS)
26 Brakelight Switch
61 Right Front Strut Actuator
62 Left Front Strut Actuator
63 Right Rear Strut Actuator
64 Left Rear Strut Actuator
RENDER: 1.0x

NO RELATED

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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.