ES–310
2GR-FE ENGINE CONTROL SYSTEM
– SFI SYSTEM
ES
DESCRIPTION
The ECM continuously monitors its internal memory status, internal circuits, and output signals sent to the
throttle actuator. This self-check ensures that the ECM is functioning properly. If any malfunction is
detected, the ECM will set the appropriate DTC and illuminate the MIL.
The ECM memory status is diagnosed by internal "mirroring" of the main CPU and the sub CPU to detect
Random Access Memory (RAM) errors. The 2 CPUs also perform continuous mutual monitoring. The
ECM illuminates the MIL and sets a DTC if: 1) outputs from the 2 CPUs are different and deviate from the
standards, 2) the signals sent to the throttle actuator deviate from the standards, 3) a malfunction is found
in the throttle actuator supply voltage, and 4) any other ECM malfunction is found.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
ECM RAM errors (P0604):
ECM CPU range check (P0606):
DTC
P0604
Internal Control Module Random Access Mem-
ory (RAM) Error
DTC
P0606
ECM / PCM Processor
DTC
P0607
Control Module Performance
DTC
P0657
Actuator Supply Voltage Circuit / Open
DTC No.
DTC Detection Condition
Trouble Area
P0604
P0606
P0607
P0657
ECM internal error (1 trip detection logic)
ECM
Related DTCs
P0604: ECM RAM error
P0606: ECM range check
P0607: ECM CPU malfunction
P0657: ETCS power supply
Required Sensors/Components (Main)
ECM
Required Sensors/Components (Sub)
-
Frequency of Operation
Continuous
Duration
Within 1 second
MIL Operation
Immediate
Sequence of Operation
None
Monitor runs whenever following DTCs are not present
None
RAM mirror check
Fail
Either of following conditions is met:
-
Difference between throttle valve position of main CPU and throttle
valve position of sub CPU
0.3 V or more
Difference between accelerator pedal position of main CPU and
accelerator pedal position of sub CPU
0.3 V or more
Содержание 2GR-FE
Страница 176: ...ES 20 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES NEXT 20 CONDUCT CONFIRMATION TEST END ...
Страница 247: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 91 ES OK REPLACE ECM See page ES 518 ...
Страница 412: ...ES 256 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A END ...
Страница 447: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 291 ES OK REPLACE ECM See page ES 518 ...
Страница 556: ...ES 400 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A REPLACE TCM ...
Страница 630: ...ES 474 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES OK REPLACE ECM See page ES 518 ...
Страница 651: ...2GR FE ENGINE CONTROL SYSTEM CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY ES 487 ES 22 INSTALL ENGINE UNDER COVER LH ...
Страница 658: ...2GR FE ENGINE CONTROL SYSTEM VVT SENSOR ES 493 ES 22 INSTALL ENGINE UNDER COVER LH ...
Страница 719: ...FU 6 2GR FE FUEL FUEL SYSTEM FU PARTS LOCATION ENGINE ROOM RELAY BLOCK ECM FUEL INJECTOR FUEL PUMP A136014E01 ...
Страница 897: ...2GR FE STARTING SMART KEY SYSTEM ST 35 ST OK REPLACE MAIN BODY ECU ...
Страница 923: ...2GR FE STARTING SMART KEY SYSTEM ST 61 ST OK REPLACE MAIN BODY ECU ...
Страница 935: ...2GR FE STARTING SMART KEY SYSTEM ST 73 ST OK REPLACE MAIN BODY ECU ...
Страница 940: ...ST 78 2GR FE STARTING SMART KEY SYSTEM ST OK REPLACE MAIN BODY ECU ...
Страница 958: ...ST 96 2GR FE STARTING SMART KEY SYSTEM ST OK END MAIN BODY ECU DEFECTIVE ...