Toyota Workshop Service and Repair Manuals

Engine Control Module: Specifications
ECM Resistance Charts

Resistance At ECU Wiring Connectors [1]

Terminals

Condition(s) .................................................................................................................................................................................................  Resistance

IDL - E2

Throttle Valve Open .........................................................................................................................................................................................  Infinity
Throttle Valve Fully Closed ...............................................................................................................................................................................  0 - 0.1

VTA - E2

Throttle Valve Open ........................................................................................................................................................................................  3.3 - 10
Throttle Valve Fully Closed ............................................................................................................................................................................  0.2 - 0.8

Vcc - E2

N/A .......................................................................................................................................................................................................................  3 - 7

THA - E2

Intake Ait Temperature 20°C (68°F) ....................................................................................................................................................................  2 - 3

THW - E2

Coolant Temperature 80°C (176°F) ................................................................................................................................................................  0.2 - 0.4

+B - E2

N/A .................................................................................................................................................................................................................  0.2 - 0.4

Vc - E2

N/A .................................................................................................................................................................................................................  0.1 - 0.3

Vs - E2

Measuring Plate Fully Closed .......................................................................................................................................................................  0.02 - 0.1
Measuring Plate Fully Open ............................................................................................................................................................................  0.02 - 1

Ne - E1

N/A .............................................................................................................................................................................................................  0.14 - 0.18

[1]

Measured by back-probing ECU wiring connector while disconnected. DO NOT touch the ECU terminals.