For 1990-2009 cars

# SMU for the 2000 L Series Body/Electrical Volume II Service Manual for DTC B2965 and Related Key In Ignition Circuit Diagnosis

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.

• | Circuit 80 is open.

• | 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.