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Diagnostic Procedure NCEC0211 1 RETIGHTEN GROUND SCREWS Loosen and retighten engine ground screws. SEF839X © GO TO 2. 2 CHECK INPUT SIGNAL CIRCUIT-1 1. Turn ignition switch “OFF”. SEF856X 3. Check harness continuity between knock sensor terminal 1 and ECM terminal 81. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK © GO TO 4. NG © GO TO 3. 3 DETECT MALFUNCTIONING PART Check the following. I Harness connectors F6, E123 I Harness for open or short between knock sensor and ECM © Repair open circuit or short to ground or short to power in harness or connectors. 4 CHECK KNOCK SENSOR Knock sensor OK or NG OK © GO TO 5. NG © Replace knock sensor. GI MA EM LC FE CL MT AT AX SU BR ST RS BT HA SC EL IDX DTC P0325 KNOCK SENSOR (KS) Diagnostic Procedure EC-331 |