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DTC B2352: Antenna fail
 
 

 
 
DTC SET CONDITION
WCM sets DTC B2101 or B2012 when the actual state of the ignition switch and the ignition switch position information received from ETACS-ECU via CAN do not match.
 
 
TECHNICAL DESCRIPTION (COMMENT)
WCM determines that the abnormality is present, if it has detected discrepancy in the ignition switch level shown below ten consecutive times when WCM has received the CAN message (ignition switch position information) from ETACS-ECU with the ignition switch turned to the ON or START position.
B2101
  • Status of ignition switch: OFF position
  • Ignition switch position information from the ETACS-ECU: ON
B2102
  • Status of ignition switch: ON position
  • Ignition switch position information from the ETACS-ECU: OFF
 
 
TROUBLESHOOTING HINTS
  • Malfunction of CAN bus line
  • Malfunction of the WCM
  • Malfunction of the ignition switch
  • Damaged wiring harness and connectors
  • Malfunction of ETACS-ECU
 
 
 
 
DTC SET CONDITION
WCM sets the DTC B2352 when open or short circuit to the ground in the antenna is detected.
 
 
TECHNICAL DESCRIPTION (COMMENT)
When the ignition switch is turned ON, WCM transmits signal to the antenna. When the antenna is found faulty, WCM determines that the abnormality is present.
 
 
TROUBLESHOOTING HINT
  • Malfunction of key reminder switch (open circuit or short to ground in the antenna)
  • Damaged wiring harness and connectors
  • Malfunction of WCM
 
 
DIAGNOSIS
STEP 1. Using scan tool MB991958, check data list.
Check the ETACS-ECU service data.
(1)
cautionTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
Connect scan tool MB991958. Refer to "How to connect the Scan Tool (M.U.T.-III) ."
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Check the ETACS data list.
  • Turn the ignition switch to the OFF (key inserted) position.
 
Item No.Item nameNormal condition
Item 264Handle lock switchKey in
OK: Normal condition is displayed.
Is the check result normal?
Go to Step 2.
Refer to GROUP 54A, Inspection Procedure 3: ETACS-ECU does not receive any signal from the key reminder switch .
 
STEP 2. Check wireless control module connector C-09 and key reminder switch connector C-307 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Is wireless control module connector C-09 and key reminder switch connector C-307 in good condition?
Go to Step 3.
Repair the defective connector.
 
STEP 3. Check the wiring harness between wireless control module connector C-09 (terminal No.1, 9) and key reminder switch connector C-307 (terminal No.7, 3).
  • Check the power supply line for open circuit.
noteAlso check joint connector (3) C-102 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If joint connector (3) C-102 is damaged, repair or replace the damaged component(s) as described in GROUP 00E, Harness Connector Inspection .
Is the wiring harness between wireless control module connector C-09 (terminal No.1, 9) and key reminder switch connector C-307 (terminal No.7, 3) in good condition?
Go to Step 4.
The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector.
 
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the DTC set?
Replace WCM and register the ID codes (Refer to ).
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).