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DTC No. P1B1F-49 CC diagnosis - ASIC1 Function Failure
DTC No. P1B20-49 CC diagnosis - ASIC2 Function Failure
DTC No. P1B21-49 CC diagnosis - ASIC3 Function Failure
DTC No. P1B22-49 CC diagnosis - ASIC4 Function Failure
DTC No. P1B23-49 CC diagnosis - ASIC5 Function Failure
DTC No. P1B24-49 CC diagnosis - ASIC6 Function Failure
DTC No. P1B25-49 CC diagnosis - ASIC7 Function Failure
DTC No. P1B26-49 CC diagnosis - ASIC8 Function Failure
 
 
 
 
MONITOR EXECUTION
Once per driving cycle (During the BMU activation)
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • BMU monitor
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Condition
  • BMU power supply voltage is more than 7.578 volts
Judgment Criterion
  • The status is in fail condition.
 
 
OBD-II DRIVE CYCLE PATTERN
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the BMU
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle OBD-II DRIVE CYCLE.
(2) Check the DTC.
Is the DTC set?
Disassemble the drive battery (Refer to SERVICE PROCEDURE). After the disassembly, replace the BMU (Refer to BATTERY MANAGEMENT UNIT (BMU) REMOVAL AND INSTALLATION). Then,
The trouble can be an intermittent malfunction (Refer to General Information - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
 
2.Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle OBD-II DRIVE CYCLE.
(2) Check the DTC.
Is the DTC set?
Retry the troubleshooting.
The procedure is complete.