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TROUBLESHOOTING DIESEL FUEL 13A-64 • Failed rail pressure sensor. • Harness damage in rail pressure sensor circuit or loose connector contact. • Failed engine-ECU DIAGNOSTIC PROCEDURE STEP 1. M.U.T.-III diagnosis code Q: Is any other diagnosis code than P0093 set? YES : Inspection chart for diagnosis codes (Refer to NO : Go to Step 2 . STEP 2. Detection of fuel line leakage • Check whether fuel is leaking from a high-pres- sure fuel line. Q: Is the check result normal? YES : Go to Step 3 . NO : Replace the parts of an abnormal location. STEP 3. Release the air from the fuel line. • After releasing the air from the fuel line, continue idle operation for about five minutes and recheck Q: Does the trouble symptom persist? YES : Go to Step 4 . NO : The check is end. STEP 4. Connector check: A-44 rail pressure Q: Are the check results normal? YES : Go to Step 5 . NO : Repair or replace the connector. AK501327 1 2 3 AB A-44 (B) Harness side Connector: A-44 AKA00089 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 43 44 45 46 47 48 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 C-105 (B) C-105 (B) <R.H. drive vehicles> Harness side connector <L.H. drive vehicles> Connector: C-105 AB |