|
|
6E–250 ENGINE DRIVEABILITY AND EMISSIONS DTC P1404 – EGR Closed Stuck
Step Action Value(s) Yes No 1 Was the “On-Board Diagnostic (OBD) System Check” — Go to Step 2 Go to OBD System Check 2 1. Ignition “ON,” engine “OFF”, review and record Tech 2 Failure Records Data. 2. Operate the vehicle within Failure Records conditions as noted. 3. Using a Tech 2, monitor “DTC inf. for DTC P1404 until the DTC P1404 test runs. Note the result. Does the Tech 2 indicates DTC P1404 failed this — Go to Step 3 Refer to Diagnostic Aids 3 1. Disconnect the EGR valve harness connector. pin or terminals. Were there any damaged pins or terminals? — Go to Step 4 Go to Step 5 4 Repair the damaged pin or terminal. Is the action complete? — Verify repair — 5 1. Remove EGR valve from Engine. carbon deposit on EGR shaft. 3. Inspect any foreign material inside of EGR valve. Was excessive carbon deposit on EGR valve shaft — Go to Step 6 Go to Step 7 6 1. Clean up EGR valve shaft and inside of EGR valve. there is bent, leakage may occur. Was there any severe damage which affects function? 3–6 ohms Go to Step 8 Verify repair Go to Step 7 7 1. Reconnect. 40%. Did EGR work properly? — — Go to Step 8 8 1. Reset the learned zero EGR valve position. Did EGR work properly? — Verify repair Go to Step 9 9 Replace the EGR valve. Replace the EGR valve. Does DTC P1404 still fail — Go to Step 10 Verify repair 10 Replace the PCM. IMPORTANT: The replacement PCM must be UBS 98model year Immobilizer Workshop Manual. Is the action complete? — Verify repair — |