Code 25, 53 - Fuel Pressure Regulator VSV

NOTE: See appropriate WIRING DIAGRAM in WIRING DIAGRAMS  section for terminal and connector identification.

NOTE: Test number refers to number on diagnostic chart.

1. Test resistance between Red wire and Green/White wire at VSV connector.

Fig 1: Code 25, 53 - Diagnostic Flowchart - 1 Of 2 (2.6L Passport)

Courtesy of ISUZU MOTOR CO.

Fig 2: Code 25, 53 - Diagnostic Flowchart - 2 Of 2 (2.6L Passport)

Courtesy of ISUZU MOTOR CO.