Scan Tool Diagnostics

A scan tool is used to retrieve and clear DTCs. The scan tool also has several features that can be used to help locate an intermittent condition. When scan tool is used for system tests, it will display values actually seen or commanded by various systems (i.e., BCM, PCM, instrument cluster, EBCM or SDM). This will usually include the following types of information:

Analog Data Input

Displays analog input seen by system.

Inputs/Outputs

Displays digital values as seen by system, and provides indication of whether input or output has cycled.

Special Functions (Output Controls)

Allows for outputs of system to be set at a desired value (ON or OFF).

Clear Codes

Will erase DTCs for system currently selected (if problem still exists in system, DTC may immediately reset).

DIAGNOSTIC TROUBLE CODE DEFINITIONS ⁽¹⁾

DTC ⁽²⁾

Description

B0016 ⁽³⁾

Right Front Frontal Deployment Loop Resistance Low

B0017 ⁽³⁾

Right Front Frontal Deployment Loop Open

B0018 ⁽³⁾

Right Front Frontal Deployment Loop Short To Ground/Voltage Out Of Range

B0022 ⁽³⁾

Left Front Frontal Deployment Loop Resistance Low

B0024 ⁽³⁾

Left Front Frontal Deployment Loop Short To Ground/Voltage Out Of Range

B0026 ⁽³⁾

Left Front Frontal Deployment Loop Open

B0035 ⁽³⁾

ADS Closed/Short To Ground

B0036 ⁽³⁾

ADS Open/Missing/Short To Battery

B0051 ⁽³⁾

Deployment Commanded

B0053 ⁽³⁾

Deployment CommandedWith Loop Malfunctions Present

B0090 ⁽³⁾

Active Switch Voltage Out Of Range

B0091 ⁽³⁾

Active Switch Wrong State

B0160 ⁽⁴⁾

Outside Air Temperature Sensor Circuit Low

B0161 ⁽⁴⁾

Outside Air Temperature Sensor Circuit High

B0165 ⁽⁴⁾

Passenger Compartment Temp Sensor 1 Circuit Low

B0166 ⁽⁴⁾

Passenger Compartment Temp Sensor 1 Circuit High

B0175 ⁽⁴⁾

Output Air Temp Sensor 1 Circuit Low

B0176 ⁽⁴⁾

Output Air Temp Sensor 1 Circuit High

B0180 ⁽⁴⁾

Output Air Temp Sensor 2 Circuit Low

B0181 ⁽⁴⁾

Output Air Temp Sensor 2 Circuit High

B0185 ⁽⁴⁾

Solar Load Sensor 1 Circuit Low

B0186 ⁽⁴⁾

Solar Load Sensor 1 Circuit High

B0408 ⁽⁴⁾

Temperature Control 1 Circuit Malfunction

B0415 ⁽⁴⁾

Temperature Control 1 Circuit Low

B0416 ⁽⁴⁾

Temperature Control 1 Circuit High

B1000 ⁽⁵⁾

Vehicle Interface Unit Malfunction

B1000 ⁽⁶⁾

Module Malfunction

B1004 ⁽⁵⁾

Keep Alive Memory (KAM) Reset

B1009 ⁽⁵⁾

EEPROM Checksum Error

B1367 ⁽⁷⁾

IPC Ignition 0 Circuit Low

B1397

Device Voltage Reference Out # 1 Circuit Low

B1398

Device Voltage Reference Out # 1 Circuit High

B1477

RAP Circuit Low

B1478

RAP Circuit High

B1480

Battery Rundown Protection Circuit Malfunction

B1770 ⁽⁶⁾

Left Front Seat Motor 2 Horizontal Circuit Malfunction

B1775 ⁽⁶⁾

Left Front Seat Motor 3 Vertical Circuit Malfunction

B1780 ⁽⁶⁾

Left Front Seat Motor 4 Rear Vertical Circuit Malfunction

B1785 ⁽⁶⁾

Left Front Seat Motor 5 Recline Circuit Malfunction

B1826 ⁽⁶⁾

Driver Recline Sensor Circuit Performance

B2356 ⁽⁶⁾

Driver Front Vertical Sensor Circuit Performance

B2376 ⁽⁶⁾

Driver Horizontal Sensor Circuit Performance

B2462 ⁽⁵⁾

GPS Signal Error

B2476 ⁽⁵⁾

Cellular Phone Select Service Switch Malfunction

B2527 ⁽⁸⁾

Front Foglight Circuit Low

B2537 ⁽⁸⁾

Rear Foglight Circuit Low (Export Only)

B2577 ⁽⁹⁾

ALC Headlight Control Circuit Low

B2585 ⁽⁸⁾

Park Light Control Circuit Malfunction

B2600 ⁽⁹⁾

DRL Light Circuit Malfunction

B2613 ⁽¹⁰⁾

Passenger Compartment Dimming 1 Circuit High

B2617 ⁽¹⁰⁾

Passenger Compartment Dimming 2 Circuit Low

B2618 ⁽¹⁰⁾

Passenger Compartment Dimming 2 Circuit High

B2647 ⁽⁹⁾

Ambient Light Sensor Short To Ground/Open

B2648 ⁽⁹⁾

Ambient Light Sensor Short To Battery

B2725 ⁽¹¹⁾

ATC Mode Switch Circuit Malfunction

B2752 ⁽¹²⁾

Horn Relay Coil Circuit Low

B2947 ⁽¹³⁾

Security System Sensor Power Circuit Low

B2948 ⁽¹³⁾

Security System Sensor Power Circuit High

B2957 ⁽¹³⁾

Security System Sensor Data Circuit Low

B2958 ⁽¹³⁾

Security System Sensor Data Circuit High

B2960 ⁽¹³⁾

Security System Sensor Data Incorrect But Valid

B2961 ⁽¹³⁾

Key In Ignition Circuit Malfunction

B2973 ⁽¹³⁾

Left Front Door Key Switch Circuit Low

B3031 ⁽¹³⁾

Security System Controller In Learn Mode

B3033 ⁽¹³⁾

Security System Indicates Tamper

B3102 ⁽¹⁴⁾

Keyless Entry Data Link Circuit Low

B3137 ⁽¹⁵⁾

All Door Lock Circuit Low

B3138 ⁽¹⁵⁾

All Door Lock Circuit High

B3147 ⁽¹⁵⁾

Right Front Unlock Switch Circuit Low

B3148 ⁽¹⁵⁾

Right Front Unlock Switch Circuit High

B3792 ⁽⁶⁾

Seat Switch Circuit Malfunction

U1000 & U1088

CLASS 2 COMMUNICATION MALFUNCTION

U1001-U1088:

LOSS OF XXX COMMUNICATIONS

U1300

Class 2 Serial Data Link Low

U1301

Class 2 Serial Data Link High

⁽¹⁾	See DIAGNOSTIC TESTS for test and repair procedures.

⁽²⁾	For DTCs not listed, repair appropriate system as necessary.

⁽³⁾	For information on air bag DIAGNOSIS & TESTING or DISPOSAL PROCEDURES, see lemon-25(R) AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.

⁽⁴⁾	See appropriate AUTOMATIC A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.

⁽⁵⁾	Cellular Communication DTC.

⁽⁶⁾	See appropriate POWER SEATS article.

⁽⁷⁾	See ANALOG INSTRUMENT PANELS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S10 PICKUP article.

⁽⁸⁾	See EXTERIOR LIGHTS article.

⁽⁹⁾	See HEADLIGHT SYSTEMS & DAYTIME RUNNING LIGHTS article.

⁽¹⁰⁾	See ILLUMINATION/INTERIOR LIGHTS article.

⁽¹¹⁾	Transfer case DTC.

⁽¹²⁾	See STEERING COLUMN SWITCHES - TRUCKS - EXCEPT TRACKER article.

⁽¹³⁾	See ANTI-THEFT SYSTEMS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S10 PICKUP article.

⁽¹⁴⁾	See REMOTE KEYLESS ENTRY SYSTEMS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S10 PICKUP article.

⁽¹⁵⁾	See POWER DOOR LOCKS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S-10 PICKUP article.