Refer to the Scan Tool Manual for complete information
on scan tool diagnostics.
Diagnostic Trouble Codes (DTC)
| • | DTC Information: In this mode, DTC history is displayed. This
data includes the number of ignition cycles since the DTC was set, along with
other system information. |
| • | Clear DTC Information: In this mode, DTCs stored by the EBTCM
may be displayed or cleared. |
Data Display
The Data Display list contains a brief description of all ABS/TCS data
parameters available on the scan tool.
| • | Brake Light Switch--scan tool displays: Applied/Released--This
parameter indicates the state of the brake light switch. |
| • | Left Front Wheel Speed--scan tool displays: Km/h / MPH--Display
shows actual wheel speed. |
| • | Right Front Wheel Speed--scan tool displays: Km/h / MPH--Display
shows actual wheel speed. |
| • | Left Rear Wheel Speed--scan tool displays: Km/h / MPH--Display
shows actual wheel speed. |
| • | Right Rear Wheel Speed--scan tool displays: Km/h / MPH--Display
shows actual wheel speed. |
| • | Delivered Engine Torque--scan tool displays: 0 to 100 %--This
parameter represents the delivered engine torque from the Engine Control Module. |
| • | RPM--scan tool displays: 0 to 10200 RPM--This is essentially
a digital tachometer display. |
| • | Delivered Transmission Torque--scan tool displays: 0 to 100
%--This parameter represents the delivered transmission torque from the
Transmission Control Module. |
| • | Traction Control System Switch--scan tool displays: On/Off--This
parameter indicates the state of the traction control switch. |
| • | Valve Relay--scan tool displays: On/Off--This parameter
indicates the state of the valve relay. |
| • | Return Pump Relay--scan tool displays: On/Off--This
parameter indicates the state of the return pump relay. |
| • | Left Front Solenoid Valve--scan tool displays: Active/Inactive--This
display indicates the commanded state of the solenoid valve. |
| • | Right Front Solenoid Valve--scan tool displays: Active/Inactive--This
display indicates the commanded state of the solenoid valve. |
| • | Rear Solenoid Valve--scan tool displays: Active/Inactive--This
display indicates the commanded state of the solenoid valve. |
Special Functions
| • | Lamp Test: This test allows activation of the ABS indicator or
TC indicator to aid in diagnosing indicator malfunctions. The test flashes
the indicator every two seconds for a maximum of thirty seconds or until the
Yes/No is pressed. |
| • | Return Pump Relay Test: This test will command the return pump
relay on for approximately five seconds. The return pump should run for approximately
five seconds. |
| • | Solenoid Test: This test will operate in three modes; Pressure
Increase; Pressure Hold; Pressure Release. The scan tool will actuate the
solenoid valve according to the mode of operation. The technician will then
be asked by the scan tool if the wheel can be turned, or is locked, depending
on which mode of operation is used. |
Snapshot
In this test mode, the scan tool captures data before and after a snapshot--triggering
condition which may or may not set a DTC.
ABS Programing
Replacement EBTCMs require the variant coding to be programmed in to
the EBTCM memory. Program the EBTCM if a new EBTCM is installed in a vehicle.
The programming is performed with the scan tool. When ABS Programming is performed
with the scan tool, the engine type and the transmission type are coded into
the EBTCM memory. The EBTCM requires the engine and transmission coding for
TCS operation.
