F 450 4WD Super Duty V8-6.0L DSL Turbo VIN P (2003)
a. Disconnect the glow plug control module (GPCM) VPWR circuit to isolate the GPCM and alternator from the FICM and provide more
consistent FICM testing. (Figure 1)
b. Disconnect the fuel heater relay, if equipped.
c. With IDS already installed, turn ignition to run position.
6.
Monitor engine oil temperature (EOT) PID.
a. If EOT reads 32 °F (0 °C) or less, proceed to Step 11
b. If EOT reads greater than 32 °F (0 °C), proceed to Step 7.
7. Turn ignition off.
8. Disconnect the EOT sensor.
9. Using Rotunda Technician Tool Program Universal Gauge and Component Tester (0TC3385) or equivalent, adjust setting to 100,000 ohms
resistance. Verify tester resistance using a digital volt ohm meter (DVOM) with 10 mega ohm minimum impedance.
10. Connect the instrument gauge system tester between the EOT signal and SIGRTN circuits at the harness side of the EOT connector.
a. Failure to apply exactly 100,000 ohms of resistance at this location may result in inaccurate test results.
11. With key on and engine off, monitor the FICM_MPWR PID and record the value.
12. Cycle the ignition to off and back to run position to activate the injector pre-cycle. Monitor the FICM_MPWR PID and ensure voltage reading is
greater than 45 volts during the entire duration of the last 10 seconds of the fuel injectors clicking.
a. If FICM_M power is 45 volts or greater, the PMI repaired the concern. Reassemble the EOT circuits if previously removed. Return vehicle to
customer.
b. If FICM_MPWR drops below 45 volts during pre-cycle, reassemble the EOT circuits if removed previously and proceed to FICM Half Shell
Replacement procedure.
FICM Half Shell Replacement
Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage can result. Extreme care should be taken when
performing this repair.
1. Remove FICM from the vehicle and clean off any debris using shop air. Refer to WSM, Section 303-14B.
