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TRANSMISSION CONTROL SYSTEM (4L30–E) 7A1–63 DTC P0748 Pressure Control Solenoid (PCS) (Force Motor) Circuit Electrical Step Action Yes No 1 Were you sent here from the “Powertrain On–Board Diagnostic Go to Step 2 Go to OBD System Check Refer to Driveability and Emission in Engine section 2 1. Install the scan tool. NOTE: Before clearing DTC(s), use the scan tool to record “Failure 3. Record the DTC “Failure Records”. while observing “PC Ref. Current” and “PC Act. Current”. Is the “PC Act. Current” reading always within 160 mA? Go to Diagnostic Aids Go to Step 3 3 1. Turn the ignition “off”. terminals M6–2(B) and M6–4(C). Is the resistance within 3–7 ohms? Go to Step 7 Go to Step 4 4 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 6 Go to Step 5 5 Replace the PCS. Is the replacement complete? Go to Step 10 — 6 Repair the internal wiring harness for an open. Is the repair complete? Go to Step 10 — 7 Inspect/repair circuits F–47, M6–2(B), F–43, and M6–4(C). Was a problem found? Go to Step 10 Go to Step 8 8 Inspect/repair circuits F–47, M6–2(B), F–43, and M6–4(C) for a Was a problem found? Go to Step 10 Go to Step 9 9 Replace the PCM. Refer to Powertrain Control Module (PCM) in Is the replacement complete? Go to Step 10 — 10 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 |