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USB BOX CHASSIS ELECTRICAL 54A-438 USB BOX SPECIAL TOOLS M1549100300062 TROUBLESHOOTING STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING M1549100400069 Refer to GROUP 00 − Contents of troubleshooting . DIAGNOSIS MODE <VEHICLES WITH RADIO AND CD PLAYER> M1549101600044 Enter the diagnosis mode according to the following 1. Turn the Ignition switch to the "ACC" or "ON" position and switch off the radio and CD player. Tool Number Name Use MB991223 a. MB991219 Harness set a. Check harness b. LED harness adapter d. Probe Continuity check and voltage a. For checking connector pin contact pressure b. For checking power supply circuit c. For checking power supply circuit d. For connecting a locally sourced tester MB992006 Extra fine probe Continuity check and voltage MB991223 a d c b DO NOT USE BA MB992006 |