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EN(H6DO)-230 ENGINE (DIAGNOSTICS) DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) AY:DTC P0420 — CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1) — • DTC DETECTING CONDITION: • Two consecutive driving cycles with fault • TROUBLE SYMPTOM: • Engine stalls. CAUTION: EN-01091 BATTERY B22 E3 B47 MAIN RELAY 1 2 3 5 4 6 F44 1 2 3 4 D4 D5 D18 D29 D19 D20 D30 D7 D6 2 4 1 3 2 1 3 4 FRONT OXYGEN (A/F) SENSOR RH E47 FRONT OXYGEN (A/F) SENSOR LH E24 B19 B17 C13 B26 REAR OXYGEN SENSOR 5 4 6 2 4 3 1 3 2 B83 B19 T5 B21 E2 B83 T6 5 7 ECM B136 C: B135 B: B137 D: B47 3 4 1 2 5 6 B135 B136 C: B: B252 E24 E47 B83 2 3 19 20 11 8 3 1 2 E49 B252 4 E49 B252 8 B19 1 3 4 5 6 2 1 2 3 4 T6 3 4 1 2 B22 1 2 3 4 13 14 15 16 B137 D: 1 2 7 8 9 5 6 3 4 10 11 12 19 20 21 13 14 15 16 17 27 28 18 22 23 24 25 26 1 2 7 8 9 5 6 3 4 10 11 12 13 14 15 16 17 18 22 23 24 5 6 7 8 2 1 9 4 3 10 24 22 23 25 11 12 13 14 15 26 27 28 16 17 18 19 20 21 1 2 3 4 5 6 7 8 9 10 11 12 19 20 13 14 15 16 17 18 SBF-5 F44 B61 6 RHD LHD LHD RHD B21 1 2 5 6 7 8 13 14 15 16 9 10 11 12 3 4 17 18 19 20 |