GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Instrument Panel Cluster (DIC Present)
Table 3: Instrument Panel Cluster (No DIC Present)
Table 4: Powertrain Control Module (PCM) 3.8L (DIC Present/No DIC Present)
Table 5: Engine Control Module (ECM) 3.6L (DIC Present/No DIC Present)

The scan tool data lists contain all the instrument panel, gage, and console related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. The data list column indicates the location of the parameter within the scan tool menu selections.

Use the scan tool data lists as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all of the diagnostic procedures with Diagnostic System Check - Vehicle .

Use the scan tool data lists only after the following is determined:

    • There is no published DTC procedure nor published symptom procedure for the customer concern.
    • The DTC or symptom procedure indicated by the diagnostic system check does not resolve the customer concern.

The typical data values are obtained from a properly operating vehicle under the conditions specified in the first row of the scan tool data list table. Comparison of the parameter values from the suspect vehicle with the typical data values may reveal the source of the customer concern.

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Idling/Normal Operating Temperature

Battery Voltage

BCM Data

Volts

0-19 Volts

Headlamp Off Switch

BCM Inputs

Inactive/Active

Inactive

Key in Ignition

BCM Inputs

Inactive/Active

Active

LF Door Ajar Switch

BCM Inputs

Closed/Ajar

Closed

Left Rear Door Ajar Switch

BCM Inputs

Closed/Ajar

Closed

Park Lamp Switch

BCM Inputs

On/Off

Off BCM Inputs

RF Door Ajar Switch

BCM Inputs

Closed/Ajar

Closed

Right Rear Door Ajar Sw

BCM Inputs

Closed/Ajar

Closed

Trunk Open Switch

BCM Inputs

Closed/Open

Closed

Instrument Panel Cluster (DIC Present)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Idling/Normal Operating Temperature

Battery Voltage

IPC Data

Volts

0-19 Volts

Brake Fluid Level Switch

IPC Data

Off/On

Off

DIC Information Switch

IPC Data

Off/On

Off

Fuel Switch

IPC Data

Inactive/Active

Inactive

Gauge Switch

IPC Data

Inactive/Active

Inactive

Outside Air Temp

IPC Data

Counts

Varies w/out side air temp.

Outside Air Temp. Raw

IPC Data

Fahrenheit (Celsius)

Varies w/out side air temp.

Outside Air Temp. Filtered

IPC Data

Fahrenheit (Celsius)

Varies w/out side air temp.

Reset Switch

IPC Data

Inactive/Active

Inactive

Select Switch

IPC Data

Off/On

Off

Instrument Panel Cluster (No DIC Present)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Idling/Normal Operating Temperature

Battery Voltage

IPC Data

Volts

0-19 Volts

Brake Fluid Level Switch

IPC Data

Off/On

Off

English/Metric Sw.

IPC Data

Inactive/Active

Inactive

Trip Reset Switch

IPC Data

Inactive/Active

Inactive

Powertrain Control Module (PCM) 3.8L (DIC Present/No DIC Present)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Idling/Normal Operating Temperature

Change Engine Oil Indicator Command

IPC PCM Data

On/Off

Off

Cruise Control Active

IPC PCM Data

No/Yes

No

ECT Sensor

IPC PCM Data

Celsius (Fahrenheit)

85-105°C (185-220°F)

Engine Hot Lamp Command

IPC PCM Data

Off/On

Off

Engine Oil Life Remaining

IPC PCM Data

Percent (%)

Varies w/oil life

Engine Oil Level Switch

IPC PCM Data

OK/Low

OK

Engine Oil Pressure Switch

IPC PCM Data

OK/Low

OK

Engine Speed

IPC PCM Data

RPM

±100 RPM from Desired Idle Speed

Engine Speed Circuit Status

IPC PCM Data

Ok/Fault/Invalid State

Ok

Fuel Tank Level Remaining

IPC PCM Data

Percent (%)

Varies w/fuel level

Fuel Level Sensor

IPC PCM Data

Voltage

Varies w/fuel level

Generator Lamp Command

IPC PCM Data

Off/On

Off

Ignition 1 Signal

IPC PCM Data

Voltage

0-18 Volts

Low Engine Oil Level Indicator Command

IPC PCM Data

On/Off

Off

Low EOP Indicator Command

IPC PCM Data

On/Off

Off

MIL Command

IPC PCM Data

On/Off

Off

MIL Circuit History

IPC PCM Data

Ok/Open/Short/ Invalid State

Ok

Vehicle Speed Sensor

IPC PCM Data

miles per hour (kilometers per hour)

0 mph (0 km/h)

Engine Control Module (ECM) 3.6L (DIC Present/No DIC Present)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Idling/Normal Operating Temperature

Cruise Control Active

IPC ECM Data

No/Yes

No

Current Gear

IPC ECM Data

P/N, 1st, 2nd, 3rd, 4th, 5th, Reverse

P/N

ECT Sensor

IPC ECM Data

Celsius (Fahrenheit)

85-105°C (185-220°F)

Engine Oil Life Remaining

IPC ECM Data

%

Varies

Engine Oil Level Switch

IPC ECM Data

Ok/Low

Ok

Engine Oil Pressure Sensor

IPC ECM Data

kPa/psi

Varies w/oil pressure

Engine Oil Temperature Sensor

IPC ECM Data

Celsius (Fahrenheit)

Varies w/engine oil temperature

Engine Speed

IPC ECM Data

RPM

±100 RPM from Desired Idle Speed

Fuel Level

IPC ECM Data

Percent (%)

Varies w/fuel level

Fuel Tank Level Remaining

IPC ECM Data

Liters/Gallons

Varies w/fuel level

Fuel Level Sensor

IPC ECM Data

Voltage

Varies w/fuel level

Ignition 0 Signal

IPC ECM Data

Off/On

Off

Ignition 1 Signal

IPC ECM Data

Off/On

On

Low EOP Indicator

IPC ECM Data

Off/On

Off

MIL Circuit Status

IPC ECM Data

Fault/indeterminate/Ok

Ok

MIL Command

IPC ECM Data

On/Off

On/Off

Vehicle Speed Sensor

IPC ECM Data

miles per hour (kilometers per hour)

0 mph (0 km/h)