DR-22A Fuel Supply & Return System

This test must be performed with engine warm.

1. Install pressure gauge (Tool C-3292) to fitting on fuel rail, then connect diagnostic read-out tool to engine harness connector and press ATM button.
2. If fuel pressure is 53---57 psi, proceed to Test 23. DR-23 Oxygen Sensor Operation
3. If fuel pressure is below 53 psi, record pressure and proceed to Test 22 step B. DR-22B Checking For Low Fuel Pressure
4. If fuel pressure is above 57 psi, proceed to Test 22 step D. DR-22D Checking For High Fuel Pressure