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Diagnostic Codes

WARNING: This page is about a different car, the 1989 Toyota Pickup, 1989 Toyota Camry, 1989 Toyota Cab & Chassis, and 1989 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: ECU is programmed to detect ignition problems. Checking for trouble codes can speed up your diagnosis. If ECU detects a problem a diagnostic code will be set in memory. For information on system self-diagnostic capabilities and how to retrieve codes, see TESTS W/CODES article in this section.
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