Injector System Wiring Changes/Troubleshooting (07-29-86)
Publication date: 1986-10-03Reference number: 07-29-86
INJECTOR SYSTEM WIRING CHANGES/TROUBLESHOOTING
TECHNICAL SERVICE BULLETIN
Reference Number(s): 07-29-86, Date of Issue:
October 3, 1986
INJECTOR SYSTEM WIRING CHANGES
Model(s): All Subaru Models w/ Multi-Port Fuel Injection (including Turbo)
Reference: Electrical
Bulletin No.: 07-29-86
Date: October 3, 1986
SERVICE INFORMATION
THIS BULLETIN IS FOR INFORMATION ONLY.
Check Connector IV has been discontinued in production. This connector was located on the firewall above the master cylinder on 4-Door Sedan, 3 Door, Station Wagon models and on the XT Coupe right side strut tower. This change took place with the following VINs:
4 Door Sedan 215564
3 Door 800079 and on
Station Wagon 419359
XT Coupe 305507
The following changes have been made because of check connector IV being discontinued.
- The injector wires from the electronic control module (ECM) to the engine harness connector plugs are covered by a black plastic shield starting with the following VINs:
4 Door Sedan 216953 - 238945
3 Door 801364
Station Wagon 421229 - 449576 and on
XT Coupe 306075 - 315672
NOTE: Some vehicles between these VINs do not have wire shielding.
- Vehicles with shielded injector wires will be color coded yellow for injectors #1 and #3 and blue for injectors #2 and #4 in the wiring harness from the ECM to the engine harness connector.
- To troubleshoot the injector system on vehicles without check connector IV, test the injector wires at the ECM connector.
- Trouble Code (42): Fuel injector has changed. See Fig 1 .
NOTE:
For vehicles without Check Connector IV and no wiring harness modifications the normal resistance value between battery harness positive and each injector at the ECM connector is 2-3 ohms. For vehicles without Check Connector IV and having shielded wires the normal resistance value between battery positive and each injector at the ECM connector is 1.0-1.5 ohms.