Toyota Corolla Cross: Engine Control System Malfunction (C1280)
DESCRIPTION
When a malfunction has occurred in the SFI system circuit, the 4WD ECU assembly
stores DTC C1280.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
C1280
|
Engine Control System Malfunction
|
SFI system malfunction information is received by the ECM for 5 seconds
or more.
|
- Engine control system
- 4WD ECU assembly
|
PROCEDURE
1.
|
CHECK FOR DTC (SFI SYSTEM)
|
(a) Check if the SFI system DTC is output.
Powertrain > Engine > Trouble Codes
Result
|
Proceed to
|
SFI system DTC is not output
|
A
|
SFI system DTC is output
|
B
|
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DTC No.
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DESCRIPTION
The TCM continuously monitors its CPU. If the output of the CPU deviates from
the standard, the TCM will illuminate the MIL and store this DTC.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
Memory
DESCRIPTION The fuel trim is related to the feedback compensation value, not to the basic injection duration. The fuel trim consists of both the short-term and long-term fuel trims.
The short-term fuel trim is fuel compensation that is used to constantly maintain the air fuel ratio at stoichiometr