Isuzu — Fuel supply pump relearn procedure
Adjustments · Fuel supply pump / ECM
From a Isuzu service manual — check it applies to your exact model before use.
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Procedure
- Install the scan tool
- Turn ON ignition with engine OFF
- Command Fuel Supply Pump Learn Resetting with scan tool
- Observe Fuel Supply Pump Status, confirm Not Learned
- Start engine and let idle until ECT reads 149°F (65°C) or higher
- Status changes Not Learned > Learned
Tools required
- Scan tool Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- ECT 149 °F (65 °C) or higher
Source: Isuzu service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.