This instruction show you guide on how to solve engine oil pressure sensor circuit failed high for Detroit deisel Gen 5 DD engine.
Related Contents:
2024 Detroit Diesel Diagnostic Link DDDL 8.19 8.09 Free Download
Description:This Fault Sets When Either Short to Voltage or Open circuit on Engine Oil Pressure (EOP) Sensor Circuit Are Present.
Monitored Parameter:Engine Oil Pressure
Typical Enabling Conditions:Always On
Monitor Sequence:Key ON Engine Running
Execution Frequency:Continuous When Enabling Conditions Are Met
Typical Duration:Two Seconds
Dash Lamps:CEL
Engine Reaction:None
Verification:Check at Engine Operating Temperature
Procedures:
Note : If diagnostic leads to a mechanical (non-electrical) low oil pressure condition, all mains and connecting rods should be inspected.
Check as follows:
1.Turn the ignition ON (key ON, engine OFF).
2.Check for multiple codes. Is SPN 3510/FMI 3 also present?
2a Yes; diagnose 3510/FMI 3 fault first.
2b No; Go to step 3.
3.Disconnect the Engine Oil Pressure (EOP) sensor and inspect the electrical connector for damage, corrosion or spread pins. Is damage, corrosion or spread pins present?
3a Yes; repair as necessary.
3b No; Go to step 4.
4.Measure the resistance between pin 2 of the EOP sensor harness connector and ground. Is the resistance greater than five ohms?
4a Yes; repair open between pin 2 of the EOP sensor and pin 105 of the MCM 120-pin connector.
4b No; Go to step 5.
5.Measure the voltage between pin 3 of the EOP sensor harness connector and ground. Is voltage present?
5a Yes; Go to step 6.
5b No; repair open between pin 3 of the EOP sensor and pin 82 of the MCM 120-pin connector.
6.Is the voltage from previous step greater than five volts?
6a Yes; repair short to battery power between pin 3 of the EOP sensor and pin 82 of the MCM 120-pin connector.
6b No; Go to step 7.
7.Measure the voltage between pin 2 of the EOP sensor harness connector and ground. Is voltage present?
7a Yes; repair the short to power between pin 2 of the EOP sensor and pin 105 of the MCM 120-pin connector.
7b No; Go to step 8.
8.Measure the voltage between pin 1 of the EOP sensor harness connector and ground. Is voltage present?
8a Yes; repair the short to power between pin 1 of the EOP sensor and pin 54 of the MCM 120-pin connector.
8b No; Go to step 9.
9.Measure the resistance between pin 1 of the EOP sensor harness connector and pin 54 of the MCM 120-pin connector. Is the resistance greater than five ohms?
9a Yes; repair an open between pin 1 of the EOP sensor harness connector and pin 54 of the MCM 120-pin connector.
9b No; replace the EOP sensor.
More ISUZU repair,please refer to:ISUZU Truck Repair.