Engine Control Module

Test Readings, Control Module Connections







Scope

The following contain readings and directions for measuring signals/levels on the Trionic control module.

Keep in mind:

- Note the measuring conditions, use common sense when considering the measurement results.

- The specified values are with the ignition in the ON position unless otherwise stated.

- First, check that the control module is supplied with power and that it is grounded.

- Then check all the inputs and signals from other systems.

- Finally, check the control module outputs. Remember that the test readings do not indicate whether the actuator is working.

- If any measured value is incorrect, use the wiring diagram to diagnose which leads, connections or components that should be checked further.

- Specified values refer to calibrated Fluke 88/97.

- The measured values %(+) and ms(+) indicate the pulse ratio and pulse length of the signal respectively. A test instrument with pulse ratio respective pulse width measuring capacity must be used. The sign indicates positive trigger pulse, TRIG+.

Connector View:

> = greater than ; < = less than ; ~ = alternating current. Pins without further comments have no connections. (LP: LOGIC PROBE P=select pulse; p=visible pulses).

Pins 1 - 10:

Pins 11 - 18:

Pins 20 - 27:

Pins 28 - 35:

Pins 36 - 44:

Pins 45 - 51:

Pins 52 - 58:

Pins 59 - 67:

Pins 68 - 70: