Signal Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check Open or Short in signal circuit

IG "OFF".
Disconnect Knock sensor connector.
IG KEY "ON" & ENG "OFF".
Measure the voltage between signal 1 terminal of knock sensor harness connector and chassis ground.
Measure the voltage between signal 2 terminal of knock sensor harness connector and chassis ground.
Specification: Approx 1.6 V
Is the measured voltage within specification?
YES
- Go to "Check Short in signal circuit" procedure below.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check Short in signal circuit

IG "OFF".
Disconnect Knock sensor connector and ECM connector.
Measure the resistance between signal 1 and signal 2 terminal of knock sensor harness connector.
Specification: Infinite
Is the measured resistance within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.