Circuit Tests: Notes

NOTE: Geo uses two types of diagnostic connectors. Duty check Data Link Connector (duty check DLC) and OBD-II Data Link Connector (DLC). In this article, duty check DLC refers to 6-pin diagnostic connector. Connector is located next to left strut tower in engine compartment. DLC refers to 16-pin diagnostic connector located under instrument panel used for scan tool hook-up.

NOTE: Ensure battery condition, cranking speed, and fuel quantity/quality are okay before performing CIRCUIT TESTS .

CIRCUIT TEST DIRECTORY

Malfunction ⁽¹⁾

Chart No.

Inoperative Malfunction Indicator Light

⁽²⁾ B1-1

Malfunction Indicator Light On Steady

⁽²⁾ B1-2

Engine Cranks But Will Not Start

A1-3

No Communication From Data Link Connector

⁽²⁾ B1-4

Fuel Injector Circuit Check/Engine No-Start

A1-5

Fuel System Diagnosis/Fuel Pump Relay Check

A1-7A

Fuel System Diagnosis/Fuel Pressure Check

A1-7B

⁽¹⁾	Before using CIRCUIT TESTS, perform appropriate On-Board Diagnostic (OBD) System Check circuit test to determine starting point. See TESTS W/CODES article.

⁽²⁾	See appropriate TESTS W/CODES article.