PleasureCraft Engine Group 5.0L, Руководство по диагностике

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5.0/5.7/6.0/8.1L Diagnosis 5 - 123
MEFI 4 - PCM
Step Action Value Yes No
1
Was the “On-Board Diagnostic” (OBD) system check Go to OBD
performed? — Go to Step 2 System Check
Verify proper cooling system operation, including raw water
2
pump volume test.
Repair
Was a problem found? — as necessary Go to Step 3
1. Disconnect the port exhaust temp. switch harness
connector.
3
2. Using a DMM, measure resistance between the switch
terminal and the exhaust elbow/riser.
Does the DMM display the specifi ed value? 0 ohms Go to Step 7 Go to Step 4
Using a DMM, measure the resistance between the port
4
exhaust temp. switch harness connector and a known
good ground.
Does the DMM display the specifi ed value? 0 ohms Go to Step 5 Go to Step 10
1. Disconnect the starboard exhaust temp. switch harness
connector.
5
2. Using a DMM, measure resistance between the switch
terminal and the exhaust elbow/riser.
Does the DMM display the specifi ed value? 0 ohms Go to Step 7 Go to Step 6
Locate and repair a short to ground in the exhaust
6
temperature switch circuit. If a problem is found, repair as
necessary.
Was a problem found? — Verify Repair Go to Step 9
Verify exhaust elbow temperature is not exceeding 248°F.
7
If a problem is found, repair as necessary.
Was a problem found? — Verify Repair Go to Step 8
8
Replace faulty exhaust temperature switch.
Is action complete? — Verify Repair —
9
Replace the faulty ECM.
Is the action complete? — Verify Repair —
10
Problem may be intermittent. Refer to Diagnostic Aids. — — —
DTC 81 - Exhaust Temperature Switch (ETS) Circuit - High Temp. Indicated (Scan Diagnostics)