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7A1–72 TRANSMISSION CONTROL SYSTEM (4L30–E) DTC P1850/Flashing Code 88 Brake Band Apply Solenoid Malfunction (Cont’d) Step No Yes Action 23 The wiring harness between the PCM connector terminal C1–A16 Was a problem found and corrected? Go to Step 26 — 24 The wiring harness between the transmission 16–way connector Was a problem found and corrected? Go to Step 26 — 25 Check every connection at the PCM. Is the replacement complete? Go to Step 26 — 26 1. After the repair is complete, use the scan tool to select “DTC”, then “Clear Info” function and ensure the following conditions D The brake band apply solenoid is commanded “on” and the D The brake band apply solenoid is commanded “off” and the 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 |