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(P0748) MODULATING PRESSURE SOLENOID CIRCUIT (CONTINUED) 4. MODULATING PRESSURE SOLENOID CONTROL CIRCUIT SHORT TO GROUND With the ignition off. Measure the resistance between ground and the Modulating Pressure Is the resistance above 100 kohms? Yes >> Go To 5 No >> Repair the Modulating Pressure Solenoid Control circuit for a short to ground. Perform NAG1 TRANSMISSION VERIFICATION TEST. 5. MODULATING PRESSURE SOLENOID CONTROL CIRCUIT SHORT TO OTHER CIRCUITS With the ignition off. Measure the resistance between the Modulating Pressure Solenoid Is the resistance above 100 kohms for all measurements? Yes >> Go To 6 No >> Repair the Modulating Pressure Solenoid Control circuit for a short to other circuits. Perform NAG1 TRANSMISSION VERIFICATION TEST. 6. MODULATING PRESSURE SOLENOID RESISTANCE OUT OF TOLERANCE With the ignition off. Reconnect the Transmission Solenoid Assembly harness connector. Measure the resistance between the Modulating Pressure Solenoid Is the resistance between 2.5 and 6.5 ohms? Yes >> Replace the Transmission Control Module. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/ TRANSMISSION CONTROL MODULE - REMOVAL). Perform NAG1 TRANSMISSION VERIFICATION TEST. No >> Replace the Modulating Pressure Solenoid. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1/ ELECTROHYDRAULIC UNIT - REMOVAL). Perform NAG1 TRANSMISSION VERIFICATION TEST. ZH NAG1 - ELECTRICAL DIAGNOSTICS 21 - 137 |