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(P0778) SHIFT PRESSURE SOLENOID CIRCUIT (CONTINUED) When Monitored and Set Condition • When Monitored: When the solenoid is off, solenoid active with 25-75% duty cycle and/or the solenoid supply • Set Condition: If the TCM detects a short to ground or battery on the solenoid control circuit, shorted solenoid, POSSIBLE CAUSES SHIFT PRESSURE SOLENOID CONTROL CIRCUIT OPEN SHIFT PRESSURE SOLENOID CONTROL CIRCUIT SHORT TO GROUND SHIFT PRESSURE SOLENOID CONTROL CIRCUIT SHORT TO ANOTHER CIRCUIT SHIFT PRESSURE SOLENOID TRANSMISSION CONTROL MODULE For a complete Transmission Control Module Circuit Diagram, (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTO- Diagnostic Test 1. PRE-DIAGNOSTIC CHECK OUT Note: Low fluid level can be the cause of many transmission Note: Always perform diagnostics with a fully charged battery to T , read Engine DTCs. Check and repair all engine DTCs prior to performing transmission symptom diagnostics. With the DRB III T , read and record all Transmission DTCs. Note: Check connectors - Clean/repair as necessary. Poor pin to Most DTCs set on start up but some must be set by driving the vehicle such that all diagnostic monitors have run. Note: Check for any Technical Service Bulletins that may apply. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 ZH NAG1 - ELECTRICAL DIAGNOSTICS 21 - 161 |