GM Service Manual Online
For 1990-2009 cars only
Table 1: Rear Differential Clutch Control Module Scan Tool Data Parameters
Table 2: Rear Differential Clutch Control Module Scan Tool Output Controls

The rear differential clutch control module (CCM) Scan Tool Data List contains all the clutch control module system related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. The column, "Data List," indicates the location of the parameter within the scan tool menu selections.

Use the CCM Scan Tool Data Lists as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all the diagnostic procedures with the CCM Diagnostic Starting Point. Use the CCM Scan Tool Data Lists only after the following is determined:

    • There is no published DTC procedure or published symptom procedure for the customer concern.
    • The DTC or symptom diagnostic procedure indicated by the diagnostic system check does not resolve the customer concern.

The DTC or symptom diagnostic procedure indicated by the diagnostic system check does not resolve the customer concern.

The ID Information menu is located on the CCM main screen.

Rear Differential Clutch Control Module Scan Tool Data Parameters

Parameter

System State

Expected Value

Definition

Operating Conditions: Ignition is ON, engine OFF, and vehicle is stationary

Accelerator Pedal Position sensor

--

D

The scan tool displays a percent of pedal opening position. The scan tool displays a range from 0 to 100 %.

Battery Volts

--

Varies

The scan tool displays volts. The scan tool displays a range from 0 to 25.5 volts.

Est. RDS Coupling Spd. Variation

--

Varies

The scan tool displays 1/min. The scan tool indicates a range from -640 to 635 RPMs.

Est. RDS Coupling Spd. Variation

--

Varies

The scan tool displays deg C. The scan tool indicates a range from -40 to 215 deg C.

LF Wheel Speed Sensor

--

0

The scan tool displays 0-160 km/h (0-99.5 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h (0 mph).

LR Wheel Speed Sensor

--

0

The scan tool displays 0-160 km/h (0-99.5 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h (0 mph).

Rear Drive Solenoid Cmd.

--

Varies

The scan tool displays deg C. The scan tool indicates a range from -40 to 215 deg C.

Rear Drive System Temperature sensor

--

Varies

The scan tool displays deg C. The scan tool indicates a range from -40 to 215 deg C.

Rear Drive Torque Command

--

0-100%

The scan tool displays N-m. The scan tool displays a range from 0 to 2550 N-m.

RF Wheel Speed Sensor

--

0

The scan tool displays 0-160 km/h (0-99.5 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h (0 mph).

RR Wheel Speed Sensor

--

0

The scan tool displays 0-160 km/h (0-99.5 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h (0 mph).

Vehicle Speed

--

Varies

The scan tool displays 0-1024 km/h (0-636 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving.

Rear Differential Clutch Control Module Scan Tool Output Controls

Scan Tool Output Control

Description

CCM RDS Matching ID

This 2 digit rank can be found on the connector that plugs into the rear differential clutch control module, from the clutch.