SW1 L4-1.9L SOHC VIN 8 (1996)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Vehicle - Multiple System Malfunctions
BULLETIN NO.: 95-T-41
ISSUE DATE: October, 1995
GROUP/SEQ. NO.: Engine-08
CORPORATION NO.: 586402
SUBJECT:
Erratic A/C and Power Steering Operation, Harsh Shifting with Auto. Trans., ABS Telltale On and Traction Control Not Operating, and/or RKE Not
Operating Correctly on Vehicles with RIA Cruise Control (Reprogram Vehicle Options in PCM)
MODELS AFFECTED:
1996 Saturns equipped with retailer installed accessory (RIA) cruise control system.
IMPORTANT:
Retailer installed cruise control will install on any SL2, SW1, SW2, and SC2. It can also be installed on any SL, SL1 or SC1 if it is equipped with
one or more of the following options: Power Windows (A31), Electric Roof (CF5), A/C (C60), ABS (JL9), or Automatic Transaxle (MP6).
CONDITION:
A/C compressor runs 100 percent of the time without the cooling fan running and A/C button not depressed on HVAC controller or pressure relief valve
venting refrigerant and compressor oil; power steering On 100 percent of the time, automatic transaxle with harsh shift conditions, ABS telltale On with
no traction control, and/or the rear decklid/liftgate release does not operate from hand-held (FOB) transmitter.
CAUSE:
Powertrain control module may not have been correctly reprogrammed with vehicle options when retailer installed accessory (RIA) cruise control was
installed.
CORRECTION
On 1996 Saturns, the cruise control system is controlled by the powertrain control module (PCM). Therefore, when installing a retailer installed cruise
control system, an option bit, which identifies vehicle options, must be set in the PCM. (On 1991-1995 Saturns, the cruise control was controlled by the
circuitry internal to the cruise control module, not the PCM.)
IMPORTANT:
When reprogramming the PCM EEPROM options, make sure to use service stall system software version 32.0 or later. Refer to the procedures in the
"1996 Retailer Installed Cruise Control Manual" for proper installation. (If you do not have a copy of the "1996 Retailer Installed Cruise Control
Manual," call 1 800 828-2112, prompt 5, to order a copy.)
After the cruise control system is properly installed, the PCM EEPROM must be reprogrammed with all of the correct option(s) on the vehicle by placing
an asterisk next to all of the option(s) installed on the vehicle. To place an asterisk next to an option, highlight the option and touch the space bar, or type
in the number corresponding to the option.
NOTICE:
An asterisk must be placed next to ALL current vehicle option(s) on the "Select All Option" menu. If an asterisk is not placed next to ALL of the
option(s) the vehicle is equipped with, the option(s) will default to "NO" and will not to be programmed into the PCM. This could cause damage to
certain components, or result in certain systems being inoperative.
The following list details the conditions that will occur if the required option(s) are not selected.
^
Failure to re-select "Air Conditioning": Causes the compressor to run 100 percent of the time, without the engine cooling fan running. This will
happen with or without the A/C button being depressed on the HVAC controller. When this happens, discharge pressures will become excessive,
venting refrigerant and compressor oil through the pressure relief valve on the A/C compressor. (This damages the pressure relief valve, requiring
replacement of the pressure relief valve.)
If the refrigerant side of the A/C has vented, losing compressor oil and refrigerant, and the A/C compressor continues to operate, internal A/C
compressor damage and system contamination can result. (Refer to "Judgement on Contamination of Compressor Oil" and "Compressor Pressure
Relief Valve" procedures in the "Compressor" section, and "Refrigerant Oil Loss Due to a Large Leak" procedure in "Maintaining Chemical Stability
of the Refrigerant System" section of the "1996 HVAC Service Manual.")
^
Failure to re-select "Power Steering/EVO": Causes the power steering system to operate at 100 percent assist at all times, with no EVO control.
^
Failure to re-select "Automatic Transaxle": May cause harsh shifting conditions.
