Test readings, control-module connections: Scope

The following pages include the values and readings for measuring the signals and levels on the ESP control module.

Points to remember: 

• Observe the test conditions. Use common sense in assessing the readings.
• The test readings presented are taken with the ignition switched ON unless otherwise stated.
• Start by checking that the control module is receiving power and is grounded.
• Check all sensor inputs and signals from other systems.
• Finally, check the control module outputs. Remember that the readings do not provide an indication that the actuator is operating.
• If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components that need further checking.
• The specified readings are valid for a correctly calibrated Fluke 88/97.
• The readings %(+) and ms(+) indicate the pulse ratio and pulse length. A test instrument capable of measuring both pulse ratio and pulse length must be used. The '+' sign denotes a positive trigger pulse (TRIG+).