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TRANSMISSION CONTROL SYSTEM (4L30–E) 7A1–45 DTC P0719/Flashing Code 77 TCC Brake Switch Circuit High (Stuck On) Step Action Yes No 1 1. Install the scan tool. is set, check applicable fuse. NOTE: Before clearing DTC(s), use the scan tool to record “Failure 3. Record the DTC “Failure Records”. Does the scan tool display “Brake Switch” as “closed” with the Go to Diagnostic Aids Go to Step 2 2 1. Connect the test light to ground. switch. Is the test light “on”? Go to Step 3 Go to Step 4 3 1. Connect the test light to ground. Is the test light “off”? Go to Step 7 Go to Step 5 4 Repair the open in battery feed circuit terminal I18–1 to the brake Is the repair complete? Go to Step 13 — 5 Disconnect brake switch connector I–18 and ignition switch “on”. Is the test light “on”? Go to Step 8 Go to Step 6 6 Check the brake switch short (I18–1 and I18–4). Was a problem found? Go to Step 9 Go to Step 10 7 Check circuit terminal I18–4 for a short to voltage. Is the test light “on”? Go to Step 8 Go to Step 10 8 1. Disconnect the C3 (BLUE) PCM connector. Was a problem found? Go to Step 13 Go to Step 10 9 Replace the brake switch. Is the replacement complete? Go to Step 13 — 10 1. Turn the ignition “off”. Does the scan tool display “Brake Switch” as “open” with the Go to Diagnostic Aids Go to Step 11 11 Check the PCM for faulty or intermittent connections. Was a problem found and corrected? Go to Step 13 Go to Step 12 |