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P0657-SOLENOID SUPPLY VOLTAGE CIRCUIT (CONTINUED) 2. (T78) SOLENOID SUPPLY VOLTAGE CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the TCM C1 and C2 harness connectors. Disconnect the Electrohydraulic Control Unit Assembly harness con- Measure the resistance of the (T78) Solenoid Supply Voltage circuit Is the resistance below 5.0 ohms? Yes >> Repair the (T78) Solenoid Supply Voltage circuit for an open. Perform NAG1 TRANSMISSION VERIFICATION TEST - No >> Go To 3 3. (T78) SOLENOID SUPPLY VOLTAGE CIRCUIT SHORT TO GROUND Measure the resistance between ground and the (T78) Solenoid Sup- Is the resistance below 5.0 ohms? Yes >> Repair the (T78) Solenoid Supply Voltage circuit for a short to ground. Perform NAG1 TRANSMISSION VERIFICATION TEST - No >> Go To 4 21 - 486 AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS WK |