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ZC600880 Connector: D-131 0027 DIAGNOSTIC FUNCTION JUDGEMENT CRITERIA PROBABLE CAUSES ⦆ Malfunction of the exterior transmitter antenna ⦆ Malfunction of the KOS-ECU ⦆ Damaged wiring harness and connectors DIAGNOSTIC PROCEDURE STEP 1. Check KOS-ECU connector C-102 and exterior Q:Are KOS-ECU connector C-102 and exterior transmitter antenna assembly (driver's side) connector D-131 in good condition? YES: Go to Step 2. NO: Repair or replace the damaged component(s). Refer to GROUP 00E, Harness Connector Inspection P.00E-2. STEP 2. Check the wiring harness between KOS-ECU NOTE: Also check intermediate connectors C-22 and C-32 for loose, corroded, or damaged terminals, or terminals pushed Q:Is the wiring harness between KOS-ECU connector C-102 (terminal Nos. 6, 17 and 40) and exterior transmitter antenna assembly (driver's side) connector D-131 (terminal Nos. 3, 2 and 1) in good condition? YES: Go to Step 3. NO: The wiring harness may be damaged or the connector (s) may have loose, corroded or damaged terminals, or KEYLESS OPERATION SYSTEM (KOS) 42B-51 DIAGNOSIS |