Test 58A - Identifying Warning Lamp Problems

NOTE: Oil pressure warning lamp and brake warning lamp cannot be actuated using scan tool.

NOTE: When actuating problem lamp, if scan tool displays NO RESPONSE FROM AIR BAG MODULE, see AIR BAG RESTRAINT SYSTEM article.

Using scan tool, actuate each instrument cluster warning lamp. If warning lamps turn on then off, actuator test passes. Go to next step. If actuator test fails, go to TEST 58B.
Stop actuation test. Identify faulty lamp. Perform appropriate test listed in DIAGNOSING WARNING LAMP PROBLEMS table. If no warning lamp problems exist, system is operating properly at this time.

DIAGNOSING WARNING LAMP PROBLEMS

Problem Lamp

Perform Test No.

Air Bag

⁽¹⁾ *

Charging System

⁽²⁾ *

Coolant Temperature

TEST 65A

Cruise Control

⁽³⁾ *

Low Fuel Level

TEST 67A

Oil Pressure

TEST 70A

Malfunction Indicator

⁽⁴⁾ *

Parking Brake

TEST 73A

PRNDL Indicator

TEST 59A

Seat Belt

TEST 71A

⁽¹⁾	See the AIR BAG RESTRAINT SYSTEM article.

⁽²⁾	See appropriate ALTERNATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.

⁽³⁾	See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.

⁽⁴⁾	See the TESTS W/CODES article in the ENGINE PERFORMANCE section.