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ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS TSB Revision ANTI-LOCK BRAKING SYSTEM (ABS) 35B-64 CAUTION If there is any problem in the CAN bus lines, an . CIRCUIT OPERATION The meter ECU detects the brake fluid level switch . ABS DTC SET CONDITIONS This DTC is set when all of the following cases are • When the amount of the brake fluid is less than lower limit. • When the stop light switch is OFF. • When the vehicle speed is 30km/h or more and 90km/h or less. • The acceleration G is 0.03 G or more. • The other DTCs is not set. . TROUBLESHOOTING HINTS (The most Current trouble • Damaged wiring harness or connector • Malfunction of stop light switch • Malfunction of parking brake switch • Malfunction of the hydraulic unit (integrated with ABS-ECU) • Malfunction of the combination meter (integrated with meter ECU) . Past trouble • Carry out diagnosis with particular emphasis on connector(s) or wiring harness between the com- . DIAGNOSIS Required Special Tools: • 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 • MB991970: ABS Check Harness AC305210 CONNECTOR: A-13 AU A-13 (GR) AC305229AG B-07 (GR) CONNECTOR: B-07 AC305231 CONNECTORS: C-01, C-29, C-101 DF C-101 C-01 C-29 AC305233 CONNECTOR: C-18 CS C-18 (B) |