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ASC-ECU communicates with ETACS-ECU via CAN bus lines. When received unset vehicle information
from the ETACS-ECU, this diagnosis code is output.
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- ETACS-ECU or ASC-ECU which was equipped with other vehicle is used.
- Faulty installation of ETACS-ECU or ASC-ECU
- Faulty ETACS-ECU coding
- Malfunction of ETACS-ECU
- ASC-ECU malfunction
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Use M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnosis table ).
On completion, go to Step 2.
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Q.
Is diagnosis code No.C2003 set?
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This diagnosis is complete.
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Use M.U.T.-III to check whether the ETACS-ECU-related diagnosis code is set or not.
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Q.
Is the diagnosis code set?
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Troubleshoot for the relevant diagnosis code (Refer to GROUP 54A - ETACS-ECU,
Check chart for diagnosis codes ). Then go to Step 8.
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Check the part number of ASC-ECU.
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Q.
Is the check result normal?
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Replace the ASC-ECU (Refer to ), and then go to
Step 8.
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Refer to GROUP 00 - Coding List .
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Vehicle line Transmission
OK (Vehicles for 5M/T): 5MT OK (Vehicles for 6M/T): 6MT OK (Vehicles for CVT): CVT OK (Vehicles for 6A/T): 6AT
Engine type
OK (Vehicles for BSY): DIESEL 2.0L OK (Vehicles for 4HN): DIESEL 2.2L OK (Vehicles for 4B1): D4 V.V.T. 2.4L OK (Vehicles for 6B3): S4 MIVEC
Engine power
OK (Vehicles for 4HN, 4B1, 6B3): Normal OK (Vehicles for BSY): High power
Chassis type for A.S.C.
OK (Vehicles for BSY, 4HN, 4B1): Type 3 OK (Vehicles for 6B3): Type 4
Final drive
OK (Vehicles for 2WD): Front Drive OK (Vehicles for 4WD): 4WD FF Base
Transfer
OK (Vehicles for 2WD): 2WD OK (Vehicles for 4WD): ECC
SAS 4WD TCM
OK (Vehicles for 5M/T, 6M/T): Not present OK (Vehicles for CVT, 6A/T): Present
ACDAYC
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Q.
Is the check result normal?
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Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ), and
then go to Step 8.
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Check the part number of ETACS-ECU.
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Q.
Is the check result normal?
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Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ), and
then go to Step 8.
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Q.
Is diagnosis code No.C2003 set?
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Replace the ASC-ECU (Refer to ), and then go to
Step 8.
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The trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to Cope with Intermittent Malfunction ).
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Q.
Is diagnosis code No.C2003 set?
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This diagnosis is complete.
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