OTC Wireless switch/hub - Manual (Page 74)

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Special Test Descriptions
ABS / Air Bag 2004 User Guide
Motor Rehome Test
The Motor Rehome Test prepares the brake lines for
bleeding by clearing air from the modulator. The test
returns all ABS motors to their “home” positions.
For some vehicles, the NGIS tool runs the test auto-
matically; for other vehicles, the tool displays
instructional screens for you to perform the test
manually.
IMPORTANT:
•
Before rehoming the brake system, make sure no
diagnostic codes are present.
• Do not let the master cylinder run dry during the
rehoming or brake bleeding procedures.
• Do not allow brake fluid to contact the motor pack or
the electrical connectors.
IMPORTANT: Use a recommended brake fluid,
do not use silicone brake fluids in an ABS-
equipped vehicle.
WARNING: After bleeding the brake system,
check the brake pedal for excessive travel or a
“spongy” feel. Bleed again if either condition is
present.
Pump Motor Tests
The Pump Motor Tests lets you use the NGIS tool to
manually control the pump motor. For some vehicles,
the NGIS tool runs the test automatically; for other vehi-
cles, the tool displays instructional screens for you to
perform the test manually.
Relay Test
The Relay Test lets you use the NGIS tool to manually
engage and disengage either the ABS or TCS relays
in order to test relay operation.
Requested Torque Test
The Requested Torque Test lets you use the NGIS tool
to manually control the engine torque to test for proper
operation of the traction control system (TCS).
Setup SDM Serial Number (Air Bag
Sensing and Diagnostic Module)
The Setup SDM Serial Number in DIM test lets you
program a new air bag serial number into the dash inte-
gration module (DIM). You use this test after installing
a new air bag; otherwise a diagnostic trouble code will
be set when you turn on the ignition.
The tool displays instructional screens for you to per-
form the test manually
Solenoid Tests
The Solenoid Tests let you use the NGIS tool to man-
ually control the inlet and output valve solenoids.
You can confirm proper operation by comparing what
you command with the NGIS tool to what the ECU sees
as a response and to what the actual output is at the
solenoid.
System Identification
The System Identification test displays information
about the brake system, the vehicle, and the ABS
controller.
TCS Test
The TCS test lets you use the NGIS tool to control the
pump motor in order to apply fluid pressure to the front
wheel circuits.
Traction Control System (TCS)
Manual Control Tests
The TCS Manual Control Tests let you use the NGIS
tool to perform motor tests and an adjuster assembly
control test.You can confirm proper operation by com-
paring what you command with the NGIS tool to what
the ECU sees as a response and to what the actual out-
put is at the component.
Voltage Load Test
The Voltage Load Test “loads” the ABS battery supply
circuit to test for adequate battery capacity.