94 TOYOTA starts but check engine light come on when engine hot then stalls


Asked by May 01, 2017 at 06:50 PM about the 1994 Toyota Pickup 2 Dr DX 4WD Standard Cab SB

Question type: Maintenance & Repair

I have a 94 Toyota Pickup 4 wheel drive 4 cylinder
manual. Replace battery, alternator, crank position
sensor, checked all fuses. Truck starts then 5
seconds later check engine light on and stalls
immediately. Please help if u have any suggestions

1 Answer


When the check engine light shows up in your 1990-95 Toyota vehicle, the quickest way to get the code is to access the diagnostic connector in the engine compartment ( usually sitting in the fender) or by the kick panel under the dash board in the passenger side. Connect a jumper wire between terminals TE1 and E1 terminals and by turning the key on, it will start flashing the codes in your dash. On Tercel and MR2, use the jumper wire between terminals T and E1 instead. If there are no codes, the check engine light will flash 2 times per second CONSTANTLY with no patterns or pauses. If there are any codes, it will be shown in 2 digits codes. Example: code 24 is shown as 2 flashes, a pause followed by 4 flashes. If there are mode codes, the next one will transmitted after 2.5 seconds. (One some models, codes are displayed in one digit code only and the difference is the codes are displayed with 4.5 seconds delay between codes). When finished reading the codes, turn the key off and remove the jumper wire. Shown below is an example of the location of the diagnostic connector. Here are the common codes for Toyota vehicles 1988-95: Code 11 Momentary interruption in power supply to ECU (electronic control unit or computer) up to 1991 Code 12 Engine revolution signal missing Code 13 Rpm signal to ecu missing above 1000 rpm Code 14 Igniter signal to ecu missing Code 16 A/T control signal missing from ecu Code 21 Main oxygen sensor signal fault Code 22 Water temperature sensor circuit fault Code 23 and 24 Intake air temperature signal fault Code 25 Air/fuel ratio LEAN Code 26 Air/fuel ratio RICH Code 27 Sub-oxygen sensor signal or heater circuit fault Code 28 No.2 oxygen sensor/heater signal fault Code 31 and 32 Air flow meter circuit or Vacuum sensor signal fault Code 34 and 36 Turbo-charging pressure signal fault Code 35 Altitude compensation sensor signal fault Code 41 Throttle position circuit fault Code 42 Vehicle speed sensor circuit Code 43 No starter signal to the ecu Code 51 AC signal on; DL contact off (in trany shifter with diagnostic connector jumped) Code 52, 53 and 55 Knock sensor fault Code 71 EGR system malfunction Code 72 Fuel cut solenoid signal fault Code 78 Fuel pump control signal fault Code 81, 83, 84 and 85 TCM communication fault

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