isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Knock Sensor|Service and Repair > < Knock Sensor|Description and Operation|Page 737
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[VALUES] B+

[YES]

Go to Step 9.

[NO]

Go to Step 8.

8. Repair the open black wire ground for the shield which prevents stray electromagnetic pulses from affecting the knock signal.

[YES]

Verify repair.

9. a. Reconnect the wire harness if it was previously disconnected in Step 7.

b. Set a DVM to AC voltage.
c. With the DVM, backprobe the PCM connector at A2.
d. Tap the engine lift bracket with a socket extension.
e. Did the DVM show an increase in AC voltage while tapping on the lift bracket?

[YES]

System OK.

[NO]

Go to Step 10.

10. Replace the knock sensor and verify repair.

Knock Sensor|Service and Repair > < Knock Sensor|Description and Operation|Page 737