2GR-FE ENGINE CONTROL SYSTEM
– SFI SYSTEM
ES–397
ES
DESCRIPTION
The Transmission Control Module (TCM) and ECM perform 2-way communications with each other via
the Controller Area Network (CAN). The TCM sends signals to the ECM concerning required engine rpm,
required engine torques, warning indicators in the combination meter, DTCs and other data. The ECM
sends signals to the TCM concerning engine rpm, opening angles of the throttle valve, temperature of
intake air, temperature of engine coolant, engine torques and other data. If the TCM cannot communicate
with the ECM, the TCM will conclude that there is a malfunction in the CAN system, illuminate the MIL and
set a DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
DTC
U0101
Lost Communication with TCM
DTC No.
DTC Detection Condition
Trouble Area
U0101
No communication from TCM continues
•
Open or short in TCM and ECM circuit
•
TCM
•
ECM
Related DTCs
U0101: Verify communication
Required Sensors/Components (Main)
ECM
Required Sensors/Components (Sub)
-
Frequency of Operation
Continuous
Duration
1.25 seconds
MIL Operation
immediate
Sequence of Operation
None
Monitor runs whenever following DTCs are not present
None
Battery Voltage
10.5 V or more (0.5 second or more)
Engine switch
ON
Starter
OFF
Communication signal
Lost communication with TCM
TCM
CAN-
CAN+
ECM
CAN-
CAN+
7
6
1
2
C56
C56
C55
C55
A113695E02
Summary of Contents for 2GR-FE
Page 176: ...ES 20 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES NEXT 20 CONDUCT CONFIRMATION TEST END ...
Page 247: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 91 ES OK REPLACE ECM See page ES 518 ...
Page 412: ...ES 256 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A END ...
Page 447: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 291 ES OK REPLACE ECM See page ES 518 ...
Page 556: ...ES 400 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A REPLACE TCM ...
Page 630: ...ES 474 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES OK REPLACE ECM See page ES 518 ...
Page 658: ...2GR FE ENGINE CONTROL SYSTEM VVT SENSOR ES 493 ES 22 INSTALL ENGINE UNDER COVER LH ...
Page 897: ...2GR FE STARTING SMART KEY SYSTEM ST 35 ST OK REPLACE MAIN BODY ECU ...
Page 923: ...2GR FE STARTING SMART KEY SYSTEM ST 61 ST OK REPLACE MAIN BODY ECU ...
Page 935: ...2GR FE STARTING SMART KEY SYSTEM ST 73 ST OK REPLACE MAIN BODY ECU ...
Page 940: ...ST 78 2GR FE STARTING SMART KEY SYSTEM ST OK REPLACE MAIN BODY ECU ...
Page 958: ...ST 96 2GR FE STARTING SMART KEY SYSTEM ST OK END MAIN BODY ECU DEFECTIVE ...