## Diesel Engine Management System

#### DTC Troubleshooting (cont'd)

11-134

DTC P1615: Booster (injector driver) Voltage Too Low

1. Check the ''On Board Diagnostic (OBD) System Check''.

Was the ''OBD System Check'' performed?

YES – Go to step 2.

NO – Go to OBD System Check.

1. Check the ECM ground circuit.

Was a problem found?

YES – Repair the ECM ground circuit.

NO – Substitute a known-good ECM and recheck. If symptom/indication goes away, replace the original ECM.

NOTICE

The battery power supply short circuit to 5 V power supply damages the ECM.

a a a