Can a diagnostic connector on 1995 Toyota 4 runner be jumped over with jumper wire to get check engine codes?

limited info generic answer it is flashing code when get numger look up as to what it is

The check engine light is used to blink out the trouble codes. The diagnostic connector is usually under the hood on driver's side, back near the firewall. Sometimes under the driver's dash. Use a jumper wire and connect terminals TE1 and T1. Then turn key to on, not start, and the check engine light will blink out the trouble codes. If no codes are present, the check engine light will stay on constantly. Remove jumper wire when diagnostics completed. To clear codes after repairs, disconnect the negative battery terminal for one minute, and then reconnect.
This site has Toyota code explanations:

These are terminals in the diagnostic check connector usually located under the hood on pre 1995 models using the OBD1 diagnostic system, when a jumper wire is put in between both terminals and the key is on the check engine light will blink, giving you a two digit code
This code number can then be looked up to determine the fault of the engine control system.
Specifically, terminal E1 is ground and TE1 is linked to the computer's diagnostic section,.

You have the On Board Diagnostic 1 system which applied to most vehicles through 1995. In 1996, the OBD 2 system took effect.

So on your Toyota, the way to read out your codes is with the check engine light itself. When you make a connection with a "jumper" wire and turn the ignition key to on (but not start), the check engine light will flash a series of codes. The connection to make is in a small black box under the hood called the "test connector". The box will be labeled "diagnostic" or "diag". The cover flips open and on the inside of the cover there is a chart showing what each test terminal is for. Using a small jumper wire or a paper clip, connect the two terminals TE1 and E1. Now grab paper and pen and sit in the driver's seat and turn the key to on (not start). The check engine light will start flashing the code(s). The two digit code(s) will repeat until you turn off the key.

A sample code of "35" will look like three flashes at about 1 second intervals followed by a 2-3 second pause then 5 flashes at about one second intervals. There will be another 2-3 sec. pause between codes. Write down all the codes. Turn off the key. Remove the jumper wire from the test connector. You can look up the codes on-line or here or a dealer or parts store should be able to tell you the code definition.

Hi, OBD2 didn't start until 1996, but you can extract your codes manually. You have to run a jumper in the data link connector under the hood. See procedure below. If you can tell me which engine you have, I may be able to provide the table of codes.

1982-95 MODELS All models except the 1MZ-FE engine is equipped with OBD I till 1995.

1. Make sure the battery voltage is at least 11 volts.
2. Make sure the throttle valve is fully closed.
3. Place the gear shift lever in Neutral. Turn all accessories off.
4. The engine should be at normal operating temperature.
5. Using a jumper wire, connect terminals TE1 and E1 of the Data Link Connector 1 (DLC1).
6. 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.
7. 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.
8. After the diagnosis check, turn the ignition OFF and remove the jumper wire.
9. 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.

In the engine compartment, find the diagnostic test connector. It's a small black plastic box with a cover on it marked "DTC". Flip open the cover and note the terminal map on the inside. You want to jump terminals FP and +B with a jumper wire or paper clip. Turn the ignition switch to on but do not attempt to crank the engine. Remove the fuel cap at the tank filler inlet and listen for the pump to run. This procedure bypasses the fuel pump relay, the EFI fuse, the EFI main relay, and the circuit opening relay. If the pump runs, one of those is probably faulty.

Jumper wire between TE1 and E1 (the middle and bottom right ports on the upper, or larger, section of the connector box). I used a paper clip, you can use almost any metal wire. Turn ignition on but do not start and record the pattern of "check engine" flashes.

93 was the last year for jumping A and B on the Assembly Line Diagnostic Connector

if you go to the auto parts store, they may sell a key that jumps out the dlc connector under the dash. the light will blink for the code.#

feel just under the drivers side dash you find it somewhere under there.

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