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Content .. 2022 2023 2024 2025 ..
3. PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector switch to LR. With the scan tool, monitor the LR Pressure Switch State while pressing the Pressure Switch Test button. Did the Pressure Switch state change from open to closed when the test button was pressed? Yes >> Go To 4 No >> Go To 5 4. INTERNAL TRANSMISSION If there are no possible causes remaining, view repair. Repair Repair internal transmission as necessary per the Service Information. Inspect the Solenoid Switch Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/ 5. (T16) TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/Pressure Switch Assembly har- Remove the Transmission Control Relay. Connect a jumper wire between the (A104) Fused B+ circuit and the NOTE: Check connectors - Clean/repair as necessary. CAUTION: Do not probe the PCM harness connectors. Probing the Remove the Starter Relay. Using a 12-volt test light connected to ground, check all (T16) Trans- NOTE: The test light must illuminate brightly. Compare the bright- Does the test light illuminate brightly on all Transmission Con- Yes >> Go To 6 No >> Repair the (T16) Transmission Control Relay Output circuit for an open. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/ 21 - 630 AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS LX |