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ERROR CODE and TROUBLESHOOTING
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[C940] Engine-CPU abnormality
[C962] LGC board ID abnormality
[C963] Connection detection error between the IMG board and the LGC board
SYS board • Connector check (CN135)
• Board check
Replace parts Remarks
SLG board
SYS board
Classification Error item
Circuit related service call
Check item Measures
LGC board • Does service call still occur even after turning OFF the
main power switch then back ON?
• Check if the conductor pattern between the Engine-CPU
and FROM, SRAM is short circuited or open circuited.
Replace parts Remarks
LGC board
Classification Error item
Circuit related service call LGC board ID abnormality
Check item Measures
LGC board • Connector check (CN304, CN319, CN320, CN331)
• Board check
IMG board • Connector check (CN426, CN423, CN424, CN426)
• Board check
Switching regulator • Connector check (CN403)
Harness • Connector check
• Harness check
Replace parts Remarks
LGC board If the problem is not corrected with the replacement of the
LGC board, reinstall the removed LGC board and replace the
IMG board.
IMG board If the problem is still not corrected with the replacement of the
IMG board, reinstall it and ask a specialist to repair it.
(Abnormal ID)
Classification Error item
Circuit related service call 3.3V output from the IMG board not detected on the LGC
board
Check item Measures
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