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Re: obd1 trouble code
25) is mixture control continuously lean
42) is VSS circuit - vehicle speed sensor
43) is starter signal circuit
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If the car is a V-6 model that plug is not used. The system is OBD-ll which would require a code reader. My first guess would be the throttle position sensor. When the throttle is opened the position sensor tells the computer to open the injectors.
Hi, according to autozone.com, the connector is under hood, driver side, side of strut tower, mounted on strut tower. The pic below, hoewever shows it mounted to the intake manifold. This is an OBD1 connector. You must use an OBD1 scanner to extract trouble codes or use the manual procedure pasted below. Please let me know if you need an explanation of the trouble codes (please specify your engine and trouble code) or have any other questions.
All models except the 1MZ-FE engine is equipped with OBD I till 1995.
Make sure the battery voltage is at least 11 volts.
Make sure the throttle valve is fully closed.
Place the gear shift lever in Neutral. Turn all accessories off.
The engine should be at normal operating temperature.
Using a jumper wire, connect terminals TE1 and E1 of the Data Link Connector 1 (DLC1).
Turn the ignition switch ON , but do not start the engine. Read the diagnostic code by the counting the number of flashes of the malfunction indicator lamp.
Codes will flash in numerical order. If no faults are stored, the lamp flashes continuously every 1 / 2 second. This is sometimes called the Normal or System Clear signal.
After the diagnosis check, turn the ignition OFF and remove the jumper wire.
Compare the codes found to the applicable diagnostic code chart. If necessary, refer to the individual component tests in this section. If the component tests are OK, test the wire harness and connectors for shorts, opens and poor connections.
Simple tune up may help, but sounds like a poblem with ignition module or a coil pack. May check into crankshaft position sensor as well? If a check engine light is on you may have the codes read by someone with an OBD1 scanner or look online on how to jump the connection port with a paper clip & count how many times the check engine light flashes & then you can decipher the code that it's throwing, if there is one present in the ECM. Good Luck!
To erase the check engine light on a 1994 Camry, open the hood, and, in the engine compartment fuse box, remove the blue 15 amp EFI fuse for one minute. This will clear the codes. If you have a hard code; ie a malfunctioning sensor, the light will come right back on.