DIAGNOSIS
TSB Revision
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-161
PROBABLE CAUSES
• Battery failure
• Battery terminal looseness
• Fusible link malfunction
• Damaged wiring harness and connectors
• ASC-ECU malfunction
• Charging system failed
DIAGNOSIS
Required Special Tools:
• MB991958 Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827 M.U.T.-III USB Cable
• MB991910 M.U.T.-III Main Harness A
• MB991997: ASC check harness
STEP 1. Using scan tool MB991958, diagnose the CAN bus
lines.
Using scan tool MB991958, diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the CAN bus lines (Refer to GROUP 54C −
CAN Bus Diagnosis table
P.54C-15
). On completion,
go to Step 2.
STEP 2. DTC recheck after repairing the CAN bus line
Q: Is DTC C2101 set?
YES : Go to Step 3.
NO : The procedure is complete.
STEP 3. Battery terminal check
Check that the battery terminal is not loose.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Securely install the battery terminal. Then go to Step
4.
STEP 4. Battery check
Refer to GROUP 54A − Battery Test
P.54A-9
.
Q: Is the battery in good condition?
YES : Go to Step 6.
NO : Charge or replace the battery, and then go to Step 5.
STEP 5. Charging system check
Refer to GROUP 16 − Charging System
P.16-7
.
Q: Is the charging system in good condition?
YES : Go to Step 6.
NO : Repair or replace the charging system component(s).