LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chrysler >> 1994 >> LHS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Vehicle Communications Tests >> Test 1A - Trouble Codes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test 1A - Trouble Codes

Battery must be fully charged before proceeding. Trouble codes displayed will fit 2 categories: DRB trouble codes and bus trouble codes. Connect DRB to Data Link Connector (DLC) to get trouble code. See TROUBLE CODES table and proceed to appropriate test number. If DRB screen is blank, go to TEST 2A.

TROUBLE CODES

Trouble Codes Test No.
DRB Trouble Codes
RAM TEST FAILURE TEST 3A 
CARTRIDGE ERROR TEST 4A 
KEY PAD TEST FAILURE TEST 5A 
LOW OR HIGH BATTERY TEST 6A 
Bus Trouble Codes
SHORT TO BATTERY TEST 7A
SHORT TO 5 VOLTS TEST 8A
SHORT TO GROUND TEST 9A
BUS (+) & BUS (-) SHORTED TOGETHER TEST 10A
NO TERMINATION TEST 11A 
BUS BIAS LEVEL TOO LOW TEST 12A 
BUS BIAS LEVEL TOO HIGH TEST 12A 
BUS (+) OPEN TEST 12A 
BUS (-) OPEN TEST 12A 
BUS (+) & (-) OPEN TEST 12A 
NO BUS BIAS TEST 13A 
NOT RECEIVING BUS MESSAGES CORRECTLY TEST 14A