[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > ETACS > DIAGNOSIS CODE PROCEDURES > CODE No.B210A, B210B +B POWER SUPPLY (LOW), (HIGH)
Code No.B210A +B power supply (low)
Code No.B210B +B power supply (high)
 
 
caution
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
 
 
TROUBLE JUDGEMENT
The ETACS-ECU sets the code No. B210A if the power supply fuse (IOD fuse) voltage decreases to the specified value or less, and sets the code No. B210B if the power supply fuse (IOD fuse) voltage increases to the specified value or more. However, when the status returns to normal, the ETACS-ECU automatically erases the code Nos. B210A and B210B.
 
 
COMMENTS ON TROUBLE SYMPTOM
The power supply fuse or the ETACS-ECU may have a problem.
 
 
PROBABLE CAUSES
  • Malfunction of power supply fuse
  • Malfunction of the ETACS-ECU
  • Malfunction of the battery
  • Malfunction of the alternator
  • Malfunction of harness
 
 
DIAGNOSIS PROCEDURE
STEP 1. Power supply fuse check
Is the fuse in good condition?
Go to Step 2.
Replace the power supply fuse, and then go to Step 7.
 
STEP 2. Battery check
Refer to GROUP 54A - Battery Test .
Is the battery in good condition?
Go to Step 3.
Charge or replace the battery.
 
STEP 3. Charging system check
Refer to GROUP 16 - Charging System .
Is the charging system in good condition?
Go to Step 4.
Repair or replace the charging system component(s).
 
STEP 4. Voltage measurement at ETACS-ECU connector (IODI terminal).
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Measure the resistance between the ETACS-ECU connector (IODl terminal) and body earth.
OK: System voltage
Is the check result normal?
Go to Step 6.
Go to Step 5.
 
STEP 5. Check of short to power supply, short to earth, and open circuit in IODI line between fusible link and ETACS-ECU connector
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the connector(s) or wiring harness.
 
STEP 6. M.U.T.-IIISE data list
Check the power supply fuse voltage.
  • Ignition switch: "LOCK" (OFF)
 
Item No.Item nameNormal condition
78Voltage sensing of IOD lineSystem voltage
OK: Normal condition is displayed.
Is the check result normal?
Go to Step 7.
Replace the ETACS-ECU.
 
STEP 7. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the ETACS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3) Check if diagnosis code is set.
Is the diagnosis code set?
Replace the ETACS-ECU.
The trouble can be an intermittent malfunction (GROUP 00 - How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).