Blink Fault Code Diagnostic Reference for Volkswagen and Audi vehicle, TESTING PROCEDURE 1988-90 / 4 cylinder / 50 state models - These models have a test connection near the fire wall or directly behind the air sensor plate.
1988 / 5 cylinder / California models - Records permanent faults. 1988 / 5 cylinder / 49 state models - Does not record permanent faults. Fault codes consist of 4 digits -1st digit evenly spaced flashes, 2.5sec OFF -2nd digit evenly spaced flashes, 2.5sec OFF -3rd digit evenly spaced flashes, 2.5sec OFF -4th digit evenly spaced flashes, 2.5sec OFF. 1989-March 1990 / 5 cylinder / 49 state and California models - These models have the two (2) test
connectors in the drivers side footwell or in the engine compartment near the fuel pump relay. One connector is dark colored and one is light. Intake Air Temperature Sensor - Check sensor and wiring for breaks or shorts
2413 Mixture Control - Running rich Fuel pressure too low 3424 Malfunction Indicator Lamp (MIL) failure - Check lamp and wiring.
Tags : intake air temperature sensor, intake air temperature, fuel pump relay, mixture control, california models, diagnostic reference, state models, sensor plate, volkswagen audi, 4 digits, test connectors, air sensor, indicator lamp, footwell, test connection
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