|
|
Content .. 1614 1615 1616 1617 ..
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS TSB Revision ANTI-LOCK BRAKING SYSTEM (ABS) 35B-48 ABS DTC SET CONDITIONS These diagnostic trouble codes will be set under the DTC C1266: Motor system (seizure) • This DTC is set when the ECU determines the pump motor is not running smoothly (i.e. motor DTC C1273: Motor relay problem (stuck off) • If the ABS-ECU determines that the motor is not running after the motor relay is turned on, the DTC C1274: Motor relay problem (stuck on) • If the ABS-ECU determines that the motor is run- ning after the motor relay is turned off, the ECU . TROUBLESHOOTING HINTS (The most Current trouble • Damaged wiring harness or connector • Malfunction of the hydraulic unit (integrated with ABS-ECU) . Past trouble • Carry out diagnosis with particular emphasis on connector(s) or wiring harness between the . 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 STEP 1. Using scan tool MB991958, diagnose the CAN bus CAUTION To prevent damage to scan tool MB991958, always turn the YES : Go to Step 3. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |