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DTC No.C1707: Implausible Coding Data
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the communication circuit is normal.
  • When DTC No.C1707 is set in AWD-ECU, the DTC may also be set in ETACS-ECU. When the DTC is set in ETACS-ECU, perform the diagnosis of the DTC for ETACS-ECU first.
 
 
OPERATION
AWD-ECU receives the vehicle information stored in ETACS-ECU via CAN bus lines.
 
 
DTC SET CONDITION
This DTC is set when the abnormality below is detected:
  • The vehicle information received from ETACS-ECU is not correct.
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the CAN bus line
  • ETACS-ECU malfunction
  • Malfunction of AWD-ECU
  • ETACS-ECU has been interchanged between two vehicles.

 
 
DIAGNOSIS
STEP 1. Scan tool (M.U.T.-III) CAN bus diagnostics.
(1)
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III) ."
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ). Then go to Step 3.
 
STEP 2. Check whether the DTC is set again.
Is DTC No.C1707 set?
Go to Step 3.
This diagnosis is complete.
 
STEP 3. Scan tool (M.U.T.-III) other system DTC.
Check the ETACS DTC (Refer to GROUP 54A - Troubleshooting ).
Is the DTC set?
Perform the relevant troubleshooting.
Go to Step 4.
 
STEP 4. ETACS-ECU coding data check
Using the M.U.T.-III, check if there is the engine-related, T/M-related, ASC-related abnormality to the coding data stored in the ETACS-ECU (Refer to GROUP 00 - Coding Reference Table ).
Is the check result normal?
Go to Step 5.
Repair the coding data or replace ETACS-ECU. Then go to Step 7.
 
STEP 5. Check the part number of ETACS-ECU
Check the part number of ETACS-ECU.
Is the check result normal?
Go to Step 6.
Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ), and then go to Step 6.
 
STEP 6. Check whether the DTC is set again.
Is DTC No.C1707 set?
Replace the AWD-ECU (Refer to ). Then go to Step 7.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
 
STEP 7. Check whether the DTC is set again.
Is DTC No.C1707 set?
Return to Step 1.
This diagnosis is complete.