Keep In Mind

• Note the measuring conditions, use common sense when considering the measurement results.
• The values given apply with the ignition key in the ON position unless otherwise indicated.
• First check that the control module is supplied with power and that it is grounded.
• Then check all the sensor inputs and signals from other systems.
• Finally, check the control module outputs. Remember that the measured values will not indicate if the switch device is functional.
• If any measured value is incorrect, use the wiring diagram to diagnose which leads, connections or components that should be checked further.
• Given values refer to calibrated Fluke 88/97.
• The measured values %(+) and ms(+) show the pulse ratio and pulse duration of the signal. A test instrument with pulse ratio and pulse duration measuring capacity must be used. The sign (+) indicates positive trigger pulse, TRIG+.
  Fig 1: Using Fluke 88/97

  

> = greater than

< = less than

"THKAP" = approximately equal to

~ = alternating current

(LP: LOGIC PROBE P = select pulse; p = visible pulses)

Fig 2: Identifying Control Module Connector Terminals