NS-9 Fuel Control System For Fault Codes

Complete No Start Test 1, Step A before proceeding.

1. Connect diagnostic read-out tool to the engine test connector, then erase fault codes.
2. Put the system into the Diagnostic Mode and record all codes.
3. If code sequence is 88-12-26-55, the injector driver circuits fault is present. Proceed to Test 10.
4. If code sequence is 88-12-27-55, the injector control circuits fault is present. proceed to Test 11.
5. No fault codes present, proceed to Driveability Test 1.