PleasureCraft Engine Group 5.0L, Руководство по диагностике

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5.0/5.7/6.0/8.1L Diagnosis 5 - 117
MEFI 4 - PCM
DTC 44 - Knock Sensor (KS) 1 Circuit (Scan Diagnostics)
Step Action Value Yes No
1
Was the “On-Board Diagnostic” (OBD) system check Go to OBD
performed? — Go to Step 2 System Check
Important: If you can hear the engine knock, repair the
engine mechanical problem before proceeding with this
2
diagnostic table.
Check the KS signal circuit for incorrect routing near the
secondary wires. If a problem is found, repair as necessary.
Was a problem found? — Verify Repair Go to Step 3
Check the KS signal circuit for any terminals not being
3
fully seated or for incorrect installation. If a problem is
found, repair as necessary.
Was a problem found? — Verify Repair Go to Step 4
Check knock sensor for being loose in the engine
4
block. If a problem is found, repair as necessary.
Was a problem found? — Verify Repair Go to Step 5
1. Install scan tool.
2. Select the option to view the data list.
3. Select to view the knock signal 1 parameter.
4. Disconnect “J1” harness connector.
5
5. Connect a DMM from “J1-17” (CKT 467 - Knock Signal
1) to a known good ground near the knock sensor.
93-107K
Is resistance between the specifi ed value? ohms Go to Step 8 Go to Step 6
Locate and repair open or short to ground in the circuit
6
that were out of range. If a problem is found, repair
as necessary.
Was a problem found? — Verify Repair Go to Step 7
Inspect knock sensor terminal contacts. If OK, replace
7
faulty knock sensor.
Is action complete? — Verify Repair —
8
Replace faulty ECM connections or replace faulty ECM.
Is action complete? — Verify Repair —