| Subject: | Service Manual Update for the 2000 L-Series Body/Electrical Volume II Service
Manual for DTC B2965 and Related Key-In-Ignition Circuit Diagnosis |
| Models: | 2000 Saturn L-Series Vehicles |
Purpose
The purpose of this bulletin is to provide diagnostic information for the Key-In-Ignition
circuit that was not provided in the 2000 L-Series Body/Electrical Volume II Service
Manual.
This Information is provided to ensure proper diagnosis of 2000 model year Saturn
L-Series Vehicles.
Please obtain all the 2000 L-Series Body/Electrical Volume II Service Manuals
at your location and update as indicated below.
Make photo copies of pages 2 and 3 of this bulletin. Insert a set of photo copies
between pages 632-633 of the Body Control Module (BCM) section of all the 2000
L-Series Body/Electrical Volume II Service Manuals.
B2965 - Key-In-Ignition Circuit Open
Circuit Description
When the ignition key is seated in the ignition switch, the key-in-ignition
switch contacts close, grounding circuit 80. The body control module (BCM)
monitors the state of the key-in-ignition switch, the state of the ignition switch
(OFF, ACC, or RUN), and the driver's door to control the key-in-ignition chime.
DTC Parameters
| • | The ignition is in the RUN position. |
| • | The conditions exist for 1 second. |
Diagnostic Aids
| • | Check for a poor connection at the BCM. Inspect the harness connectors
for backed out terminals, improper terminal mating, broken connector locks, improperly
formed or damaged terminals, and poor terminal-to-wire connection (terminal crimped
over wire insulation and not conductors). |
| • | Inspect the wiring harness for damage. Check for broken or chaffed insulation. |
| • | Check for a poor connection at the ignition switch. |
| • | If a fault is suspected to be intermittent, wiggling the harness wiring
may help in locating the fault. |
