Diagnostic Procedures
- Perform OBD-II system check. See ON-BOARD DIAGNOSTIC II (OBD-II) SYSTEM CHECK
. After performing OBD-II system check, go to next step.
- Turn ignition on. Compare fuel level reading on scan tool with vehicle fuel gauge. If readings are about equal, go to next step. If readings are not about equal, go to step 5
.
- Record fuel gauge reading. Turn ignition off. Disconnect PCM harness connectors. Turn ignition on. If vehicle fuel gauge reading changes, go to next step. If fuel gauge reading does not change, go to step 5
.
- Turn ignition off. Reconnect PCM harness connectors. Disconnect fuel tank level sensor connector. Using fused jumper wire, connect fuel level sensor harness connector Orange/Blue wire to ground. Turn ignition on. If scan tool and fuel gauge indicate 0 percent (empty), go to next step. If scan tool and fuel gauge readings do not indicate 0 percent, go to step 6
.
- Replace fuel tank level sensor. Go to step 7
.
- Replace and reprogram PCM using required equipment. See PROGRAMMING
. Retest system.
- Using scan tool, clear DTC information. Start engine and idle at normal operating temperature. Operate vehicle within conditions for setting DTC P0461. If scan tool indicates diagnostic RAN AND PASSED, system is okay. If DTC does not indicate system passed, go back to step 2
.
Courtesy of ISUZU MOTOR CO.