SERVICE MANUAL UPDATE-SECTION 8A-301/8D - DOOR HANDLE SWITCH
SUBJECT: SERVICE MANUAL UPDATE - SECTIONS 8A-301-0, 8A-114-8, 8A-3014 AND 8D-29 (DOOR HANDLE SWITCH DIAGNOSTICS)
VEHICLES AFFECTED: 1991-92 "E" MODEL
This bulletin is being revised to add references to charts with accompanying Service Information Manual page numbers.
Please make the following revisions to the 1991 and 1992 Toronado/Trofeo Service Information Manual.
Service Information Manual page number: 8D-29
BCM:
BI06 The door handle switch ("DOOR HNDLE") display is momentarily "HIX" when either outside door handle is lifted.
Service Information Manual page number: 8A-301-0 (See Chart)
Service Information Manual page number: 8A-114-8 (See Chart)
Service Information Manual page number: 8A-301-4 (See new page included with bulletin)
Service Information Manual Page Number: 8D-301-0 ------------------------------------------------ Instrument Panel Cluster (IPC) Display -------------------------------------- BCM PAGE Input HI LO ---- ----- -- --
BI06 LH and/or RH door handle LH and RH door 301-4 lifted Displays HI X handles released momentarily
Service Information Manual Page Number: 8D-301-8 ------------------------------------------------ BCM INPUT TEST BI06 ------------------- o Ignition Switch: RUN
o BCM Input Test: BI06
Door Handle BCM Display ----------- ----------- Not Lifted LO
Lifted Momentary HI X
INSTRUMENT PANEL CLUSTER (IPC) DISPLAY
BCM INPUT HI LO PAGE --------- -- -- ---- BI06 LH AND/OR RH DOOR HANDLE LH AND RH DOOR HANDLES 301-4 LIFTED DISPLAYS HI X RELEASED MOMENTARILY
BCM INPUT TEST BI06
o IGNITION SWITCH: RUN
o BCM INPUT TEST: BI06
DOOR HANDLE BCM DISPLAY ----------- ----------- NOT LIFTED LO
LIFTED MOMENTARY HI X
PROPER BI06 DIAGNOSTIC DISPLAYS
LO X is displayed with LH and RH door handles released.
HI X is displayed momentarily with LH and/or RH door handles lifted, then reverts to LO X.
NOTICE: BI06 displays HI X momentarily throughout the test. LO X will be dis- played after HI X has been momentarily displayed. LO X denotes the condition has changed.
TESTS FOR IMPROPER DISPLAYS
BI06 displays LO O with LH and/or RH door handle lifted, but LO X does not appear.
1. Disconnect suspect door handle switch connector and connect a fused jumper wire from connector terminal 'B' to 'A'.
o If display reads LO O go to Step 2.
o If display reads HI X or LO X, replace door handle switch.
2. Ground terminal 'A' of the suspect door handle switch connector with the fused jumper.
o If display reads LO O, go to step 3.
o If display reads HI X or LO X, repair open in BLK/WHT (803) wire.
3. Connect terminal '1C13' of Body Computer Module (BCM) to ground with a fused jumper.
o If display reads LO O check terminal contact. Replace the Body Computer Module (BCM) if terminal contact is good.
o If display reads HI X or LO X, repair GRY (157) wire for an open.
BI06 displays HI X with LH and/or RH door handle released.
1. Disconnect LH door handle switch connector.
o If display reads HI X, go to Step 2.
o If display reads LO X, replace the LH door handle switch.
2. Disconnect RH door handle switch connector.
o If display reads HI X, go Step 3.
o If display reads LO X, replace the RH door handle switch.
3. Disconnect keyless entry module connector.
o If display reads HI X, go to Step 4.
o If display reads LO X, replace keyless entry module.
4. Disconnect the Body Computer Module (BCM). Connect an ohmmeter to terminal '1C13' of the BCM connector and ground.
o If continuity is measured, check/repair GRY (157) wire for a short to ground.
o If infinite resistance is measured, check for clean connection. If connection is good, replace Body Computer Module (BCM).
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
