| Table 1: | Body Control Module (BCM) |
| Table 2: | Instrument Panel Cluster (IPC) |
| Table 3: | Powertrain Control Module (PCM) |
The scan tool data list(s) contain all the instrument panel, gages, 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 list(s) as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all of the diagnostic procedures with Diagnostic System Check - Instrument Cluster or Diagnostic System Check - Audible Warnings .
Use the scan tool data list(s) 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.
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
Operating Conditions: Ignition ON/Engine OFF/Doors Closed/Headlamp Switch Off/Seat Belt Unbuckled | |||
Battery Voltage | Data | Voltage | Varies |
Driver Seatbelt | Inputs | Buckled/Unbuckled | Unbuckled |
Ignition 0 | Inputs | On/Off | On |
Ignition 1 | Inputs | On/Off | On |
Ignition Voltage | Data | Voltage | Varies |
Key In Ignition | Inputs | Yes/No | Yes |
Low Coolant Level | Inputs | OK/Low | OK |
Park Lamp Input | Inputs | On/Off | Off |
Seat Belt Lamp | Outputs | Active/Inactive | Active |
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
Operating Conditions: Ignition ON/Engine OFF/Seat Belt Buckled/High Beams Off/Park Brake Applied | |||
8 Digit GM Part Number | Module Information | -- | Varies |
Air Bag Lamp | Inputs | On/Off | Off |
Brake Fluid Level | Inputs | OK/Low | OK |
Coolant Hot Lamp | Inputs | On/Off | Off |
Coolant Temperature | Data | ° C/° F | Varies |
Cruise Lamp | Inputs | On/Off | Off |
Display Fuel Switch | Inputs | On/Off | Off |
Display Gauge Switch | Inputs | On/Off | Off |
Display Odometer Switch | Inputs | On/Off | Off |
Engine Speed | Data | RPM | 0 RPM |
English/Metric Sw. | Inputs | On/Off | Off |
Fuel Level | Data | Liters/gallons | Varies |
High Beam Switch | Inputs | On/Off | Off |
Ignition 0 | Data | Voltage | Varies |
Ignition 1 | Data | Voltage | Varies |
Ignition 3 | Data | Voltage | Varies |
Ignition State | Inputs | Off/Run/Start | Run |
Low Fuel Lamp | Inputs | On/Off | Off |
Lt. Turning Signal Sw. | Inputs | On/Off | Off |
Oil Pressure Lamp | Inputs | On/Off | Off |
Park Brake Switch | Inputs | On/Off | On |
PROM ID | Module Information | -- | Varies |
Reset Switch | Inputs | On/Off | Off |
Rt. Turning Signal Sw. | Inputs | On/Off | Off |
Service Veh. Soon Lamp | Inputs | On/Off | Off |
Traction Off | Inputs | On/Off | Off |
Vehicle Speed | Data | km/h/mph | 0 km/h/0 mph |
Volt Lamp | Inputs | On/Off | Off |
Year Module Built | Module Information | -- | Varies |
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
Operating Conditions: Engine Running/Normal Operating Temperature | |||
ECT Sensor | Engine Data 1 Engine Data 2 EVAP | Celsius (Fahrenheit) | 85-105°C (185-220°F) |
Engine Oil Level Switch | Engine Data 2 | OK/Low | OK |
Engine Oil Life Remaining | Engine Data 2 | Percent | 0-100% (varies) |
Engine Oil Pressure Sensor | Engine Data 2 | Volts | 2.20 V |
Engine Speed | Engine Data 1 Engine Data 2 EVAP | RPM | ±100 RPM from Desired Idle Speed |
Fuel Tank Level Remaining | EVAP | Percent | 0-100% (varies) |
Vehicle Speed Sensor | Engine Data 1 Engine Data 2 EVAP | km/h (mph) | 0 km/h (0 mph) |
