ABS Without TCS or ESP

Test Readings, Control-Module Connections

Scope
The values and readings for measuring signals and levels in the ABS control module are given on the following pages.

Points To Remember:
- Observe the test conditions. Use common sense in assessing the readings.
- 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+).












Test Readings

Terminals 1 - 5:

Terminals 6 - 12:

Terminals 13 - 21:

Terminals 22 - 26:

Important: The readings apply to measurements taken on the control module's connector (unplugged) unless otherwise stated.

Image Index
> = greater than;
< = less than;
~ = alternating current
(LP: LOGIC PROBE
P = select pulse;
p = visible pulse).