10 Checking Injector Control System For Fault Codes

*** UPDATED BY TSB #18-62-86

1. Connect diagnostic read-out tool to engine test connector, then disconnect and reconnect battery quick disconnect.
2. Crank engine for 7 seconds, then turn ignition switch off.
3. Place system into Diagnostic Mode and record all codes.
4. If code sequence is 88-12-26-55, proceed to Test 11.
5. If code sequence is 88-12-27-55, proceed to Test 12.