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7A1–54 TRANSMISSION CONTROL SYSTEM (4L30–E) DTC P0748/Flashing Code 82 Pressure Control Solenoid (PCS) (Force Motor) Circuit Step Action Yes No 1 1. Install the scan tool. NOTE: Before clearing DTC(s), use the scan tool to record “Failure 3. Record the DTC “Failure Records”. observing “PC Ref. Current” and “PC Act. Current”. Is the “PC Act. Current” reading always within 0.16 amp? Go to Diagnostic Go to Step 2 2 1. Turn the ignition “off”. terminals E52–2(B) and E52–4(C). Is the resistance within 3–7 ohms? Go to Step 6 Go to Step 3 3 1. Remove the transmission oil pan. Refer to Solenoid (Adapter Case Valve Body) in Automatic Transmission (4L30–E) 2. Disconnect the internal wiring harness at the PCS. Is the resistance within 3–7 ohms? Go to Step 5 Go to Step 4 4 Replace the PCS. Is the replacement complete? Go to Step 9 — 5 Repair the internal wiring harness for an open. Is the repair complete? Go to Step 9 — 6 Inspect/repair circuits VIO/WHT and VIO/RED Was a problem found? Go to Step 9 Go to Step 7 7 Inspect/repair circuits VIO/WHT and VIO/RED for a short to Was a problem found? Go to Step 9 Go to Step 8 8 Replace the PCM. Refer to Powertrain Control Module (PCM) in Automatic Transmission (4L30–E) section. Is the replacement complete? Go to Step 9 — 9 1. After the repair is complete, use the scan tool to select “DTC”, then “Clear Info” function and ensure the following conditions 2. Review the scan tool “DTC Info”. Has the last test failed or is the current DTC displayed? Begin diagnosis again Go to Step 1 Repair verified |