Component Inspection

Component Inspection

1. Check PSD
1. Ignition "ON" & engine "OFF" & PSD "ON"
2. Measure voltage between terminal "F28-2-3, F27-2-3" of PSD and chassis ground.
A. Specification : Approx. 5V




3. Is the measured voltage within specifications ?
YES
1) Go to "Check optical sensor" procedure.
NO
1) Substitute with a known-good PSD and check for proper operation.If the problem is corrected, replace PSD and then go to "Verification of Vehicle Repair" procedure.
2. Check optical sensor
1. Connect scantool to Data Link Connector (DLC).
2. Ignition "ON" & engine "OFF" & PSD "ON"
3. Substitute with a known-good optical sensor and Check if the DTC is erased
4. Is the DTC erased ?
YES
1) Substitute with a known-good optical sensor and check for proper operation.
If the problem is corrected, replace optical sensor and then go to "Verification of Vehicle Repair" procedure.
NO
1) Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.