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3 CHECK IN-VEHICLE SENSOR Refer to HA-100. OK or NG OK © 1. Replace auto amp. form self-diagnosis STEP 2. NG © 1. Replace in-vehicle sensor. form self-diagnosis STEP 2. 4 CHECK IN-VEHICLE SENSOR CIRCUIT BETWEEN IN-VEHICLE SENSOR AND AUTO AMP. (LCU) 1. Disconnect auto amp. (LCU) harness connector. RHA479GC Continuity should exist. If OK, check harness for short. OK or NG OK © 1. Replace auto amp. (LCU). form self-diagnosis STEP 2. NG © Repair harness or connector. GI MA EM LC EC FE AT AX SU BR ST RS BT SC EL IDX TROUBLE DIAGNOSES In-vehicle Sensor Circuit (Cont’d) HA-99 |