COMPONENTS
ILLUSTRATION
On-vehicle InspectionLost Communication with ECM / PCM "A" (U0100)
DESCRIPTION
The engine control unit communicates with the TCM using the Controller Area Network
(CAN).
If there is a problem in this communication, the TCM sets a DTC.
DTC No.
DTC Detection Condition
Trouble Area
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Inspection
INSPECTION
PROCEDURE
1. INSPECT FUEL PUMP ASSEMBLY WITH FILTER
(a) Inspect fuel pump resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
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ECM Power Source Circuit
DESCRIPTION
When the ignition switch is turned to ON, the battery voltage is applied to IGSW
of the ECM. The output signal from the MREL terminal of the ECM causes a current
to flow to the coil, closing the contact of the engine room junction block assemb ...