SECTION 6C3 - POWERTRAIN MANAGEMENT
– GEN III V8 ENGINE
IMPORTANT:
Before performing any Service Operation or other procedure described in this Section, refer to Section
00 CAUTIONS AND NOTES for correct workshop practices with regard to safety and/or property
damage.
1. GENERAL I NFORMATI O N
The Powertrain Management System in VU Series Models fitted with GEN III V8 engine contains a unique
calibration that incorporates a speed limiting function. All VU Series Models with GEN III V8 engine has a
maximum road speed of 210 km/h.
From Production Serial Num ber L732452 (06 J une 2001), a "Fuel Pump Control Module" was added to the
VU GENIII V8 fuel system.
The Fuel Pump Control Module enables the PCM to command the fuel pump to run at reduced speed
during while idling (reducing pump noise) , but c ommand m ax imum pump s peed of f - idle to ensure adequate
fuel delivery under all operating conditions. T he PCM varies Fuel Pum p speed by contr olling the duty cycle
ground on the Fuel Pump PWM driver circuit to the Fuel Pump Control Module.
For information relating to powertrain management system for VU Series Models fitted with GEN III V8
engine, refer to Section 6C3 POWERTRAIN MANAGEMENT - GEN III V8 ENGINE in the VX Series
Service Information.
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