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P0876-UD PRESSURE SWITCH RATIONALITY (CONTINUED) 10. PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the NOTE: Check connectors - Clean/repair as necessary. With the Transmission Simulator, turn the Pressure Switch selector switch to the UD position. With the scan tool, monitor the UD Pressure Switch state while pressing the Pressure Switch Test button on the Did the state of the UD Pressure Switch change while pressing the Pressure Switch Test button? Yes >> Go To 14 No >> Go To 11 11. (T29) UD PRESSURE SWITCH SENSE CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM C4 harness connector and connect Miller tool CAUTION: Do not probe the PCM harness connectors. Probing Is the resistance above 5.0 ohms? Yes >> Repair the (T29) UD Pressure Switch Sense circuit for an open. Perform 45RFE/545RFE TRANSMISSION VERIFICATION No >> Go To 12 HB AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS 21 - 513 |