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SYMPTOM PROCEDURES TSB Revision SIMPLIFIED WIRING SYSTEM (SWS) 54B-72 . CIRCUIT OPERATION • The power supply to the column switch is pro- vided by the battery and the ignition switch (IG1). • If the power supply system from the battery is defective, the system operates by the power sup- . TECHNICAL DESCRIPTION (COMMENT) The power supply circuit to the column switch (col- . TROUBLESHOOTING HINTS • The wiring harness or connectors may have loose, corroded, or damaged terminals, or termi- • The column switch may be defective • The ETACS-ECU may be defective DIAGNOSIS Required Special Tools: • MB991223: Harness Set • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: Vehicle Communication Interface (V.C.I.) • MB991827: MUT-III USB Cable • MB991910: MUT-III Main Harness A • MB991813: SWS Monitor Kit • MB991806: SWS Monitor Cartridge • MB991812: SWS Monitor Harness (For Column-ECU) • MB991822: Probe Harness AC305231 C-01 C-29 CJ C-03 CONNECTORS: C-01, C-03, C-29 AC305413AL CONNECTOR: C-218 C-218 (GR) AC305235AC CONNECTOR: C-309 |