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Content .. 1990 1991 1992 1993 ..
5. (K900) SENSOR GROUND CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the TRS harness connector Disconnect the PCM C2 harness connector NOTE: Check connectors - Clean/repair as necessary. Is the resistance above 5.0 ohms? Yes >> Repair the (K900) Sensor Ground circuit for an open. Perform 42RLE TRANSMISSION VERIFICATION TEST - No >> Go To 6 6. (T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Measure the voltage of the (T54) Transmission Temperature Sensor Is the voltage above 0.5 volts? Yes >> Repair the Transmission Tempeture Sensor Signal circuit for a short to voltage. Perform 42RLE TRANSMISSION VERIFICATION TEST - No >> Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or 21 - 502 AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS LX |