SERVICE MANUAL UPDATE-SECTION 8A-301/8D - DOOR HANDLE SWITCH
SUBJECT: DOOR HANDLE SWITCH DIAGNOSTICS
MODEL/YEARS: 1991-92 TORONADO/TROFEO'
Please make the following revisions to the 1991 and 1992 Toronado/Trofeo' Service Manual.
SERVICE MANUAL PAGE NUMBER: 8D-29 Correct the following statement: B106 The door handle switch ("DOOR HNDLE") display is momentarily "HI X" when either outside door handle is lifted.
SERVICE MANUAL PAGE NUMBER: 8A-301-0 ------------------------------------ INSTRUMENT PANEL CLUSTER (IPC) DISPLAY
BCM INPUT HI LO PAGE
B106 LH AND/OR RH DOOR LH AND RH DOOR 301-4 HANDLE DISPLAYS HI HANDLES RELEASED X MOMENTARILY
SERVICE MANUAL PAGE NUMBER: 8A-114-8 ------------------------------------ BCM INPUT TEST B106
o IGNITION SWITCH TO RUN o BCM INPUT TEST B106
DOOR HANDLE BCM DISPLAY
NOT LIFTED LO
LIFTED MOMENTARY HI X
SEE NEW REVISED SERVICE MANUAL PAGE: 8A-301-4 ON THE BACK OF THIS BULLETIN.
PLEASE SEE FIGURE 1
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 displayed 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 to 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).
INPUT TESTS: BODY COMPUTER MODULE (BCM) BI06 (LH/RH DOOR HANDLE SWITCH) -----------------------------------------------------------------------
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.
