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7A2-80 TRANSMISSION CONTROL SYSTEM (JR405E) 9 1. Remove the transmission oil pan. Refer to 2. Inspect the 2-4 brake solenoid valve and • Physical damage • Loose or improper installation 3. Inspect for an intermittent and for a poor 4. Test the signal circuit between the 2-4 brake • An open circuit • A short to ground • A short to the solenoid valve circuit • High resistance 5. Repair the connection(s), circuit(s) or replace Did you find and correct the condition? — Go to Step 13 Go to Step 10 10 1. Remove the 2-4 brake solenoid valve and TFP 2. Repair or replace as necessary. Did you find and correct the condition? — Go to Step 13 Go to Step 11 11 Repair or replace the valve body assembly. Refer Did you complete the repair or replacement? — Go to Step 13 — 12 Important: Replacement TCM must be Did you complete the replacement? — Go to Step 13 — 13 1. Reconnect all previously disconnected 2. Clear the DTCs with a scan tool. 3. Turn OFF the ignition for 30 seconds. 4. Start the engine. 5. Drive the vehicle while observing the DTC Did the DTC fail this ignition? — Go to Step 2 Go to Step 14 14 Observe the DTC Information with a scan tool. Are there any DTCs that you have not diagnosed? — Go to DTC List System OK Step Action Value(s) Yes No |