System Tests: Notes

CAUTION: When battery is disconnected or modules are replaced, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

NOTE: Before beginning system tests, perform TROUBLE SHOOTING .

NOTE: When instrument cluster is replaced, Passive Anti-Theft System (PATS) system must be reconfigured. For programming and reconfiguring procedures, see COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.

NOTE: Test procedures are written specifically for New Generation Star (NGS) tester. Generic scan tools may not have the capability of performing all the same functions. Refer to scan tool manufacturer's instructions.

NOTE: After repairs are complete, ensure all components are properly installed and all harness connectors are connected properly. Repeat data link diagnostic test. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM in MODULE COMMUNICATIONS NETWORK - LS article.

SYMPTOM INDEX

Symptom

Perform Test

No Communication With Instrument Cluster

No Communication With Front Electronic Module

No Communication With Rear Electronic Module

Fuel Gauge Inaccurate

Temperature Gauge Inaccurate

Oil Pressure Indicator Never/Always On

Speedometer Inoperative

Seat Belt Warning Indicator Inoperative/Erratic

Door Ajar Indicator Inoperative/Erratic

Charge System Warning Indicator Never/Always On

Brake Warning Indicator Always On

High Beam Indicator Never/Always On

Low Washer Indicator Never/Always On

ABS Warning Indicator Never/Always On

Traction Control Warning Display Never/Always On

Light Outage Indicator Never/Always On

Malfunction Indicator Light Never/Always On

Turn/Hazard Indicator Never/Always On

Steering Column Lock Warning Indicator Never/Always On

Tachometer Inoperative

Cruise Control Indicator Never/Always On

Transmission Range Indicator Never/Always On

Low Fuel Indicator Never/Always On

Engine Temperature Indicator Never/Always On

Air Bag Indicator Never On

Air Bag Indicator Always On

⁽¹⁾

Odometer Inoperative

No Communication With Remote Emergency Satellite Cellular Unit

Message Center Display Blank

⁽²⁾

Message Center Not Operating Properly

Message Center Switch Not Operating Properly

Low Fuel Display Not Operating Properly

Oil Life Status/AC Filter Life Indicator Inoperative

Light Outage Warning Indicator Inoperative

Washer Fluid Level Display Not Operating Properly

Brake Fluid Level Display Not Operating Properly

Charging System Warning Indicator Incorrect

⁽³⁾

Data Status Distance To Empty/Average/Instantaneous Fuel Economy Incorrect

⁽⁴⁾

Data Status Message Displayed For Door Ajar

Data Status Message Displayed For RESCU

⁽⁵⁾

Data Status Message Displayed For Traction Control

⁽⁶⁾

All Chimes Inoperative

⁽²⁾

Chime Sound With Door Open, Lights Off & Key Removed

Seat Belt Warning Chime Not Operating Properly

Key-In-Ignition Chime Not Operating Properly

Headlight Reminder On Chime Not Operating Properly

Air Bag Warning Chime Not Operating Properly

Fail-Safe Cooling Chime Not Operating Properly

Turn Signal Chime Not Operating Properly

Instrument Cluster Illumination Inoperative

Climate Control Illumination Inoperative

⁽⁷⁾

Audio System Illumination Inoperative

⁽⁸⁾

All LEDs & Incandescent Lights Inoperative

All LEDs Or Incandescent Lights Inoperative

All LEDs Or Incandescent Lights Always On

All LEDs & Incandescent Lights Always On

Single Dash Light Inoperative

Instrument Panel Does Not Dim

Check Fuel Cap Indicator Never/Always On

⁽¹⁾	For information on air bag DIAGNOSIS & TESTING, see lemon-25(R) AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.

⁽²⁾	Replace instrument cluster.

⁽³⁾	Check charging system operation. See GENERATORS & REGULATORS - LS article in STARTERS & CHARGING SYSTEMS.

⁽⁴⁾	Check operation of speedometer, odometer and fuel gauge. If inoperative, perform appropriate test under SYSTEM TESTS . If speedometer, odometer and fuel gauge operate inaccurately replace instrument cluster.

⁽⁵⁾	Repair emergency message system as necessary.

⁽⁶⁾	Perform system test TEST O: TRACTION CONTROL WARNING DISPLAY NEVER/ALWAYS ON .

⁽⁷⁾	Replace dual automatic temperature control module.

⁽⁸⁾	Replace radio.