ON-BOARD DIAGNOSTIC
F–129
F
Diagnostic procedure
STEP INSPECTION ACTION
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
(See F–66 DTC CONFIRMATION
PROCEDURE.)
• Is same DTC present?
Yes Go to next step.
No Intermittent concern exists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See F–227 INTERMITTENT CONCERN
TROUBLESHOOTING.)
2 INSPECT KNOCK SENSOR CONNECTOR
TERMINAL
• Turn ignition key to OFF.
• Disconnect knock sensor connector.
• Inspect for poor connection at terminals A and
B (damaged, pulled-out pins, corrosion, etc.).
• Is there any malfunction?
Yes Repair terminal, then go to step 6.
No Go to next step.
3 INSPECT KNOCK SENSOR
• Perform knock sensor inspection.
(See F–56 KNOCK SENSOR INSPECTION)
• Is knock sensor okay?
Yes Go to next step.
No Replace knock sensor, then go to step 6.
4 INSPECT KNOCK SIGNAL CIRCUIT FOR
SHORT TO POWER
• Turn ignition key ON (Engine OFF).
• Measure voltage between knock sensor
terminal A (harness-side) and body GND and
knock sensor terminal B (harness-side) and
body GND.?
• Is any voltage reading?
Yes Repair or replace harness for short to power, then go to
step 6.
No Go to next step.
5 INSPECT PCM CONNECTOR
• Disconnect PCM connector.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
Yes Repair or replace terminal, then go to step 6.
No Go to next step.
DTC P0328 Knock sensor circuit high input
To Next Page
Loading...
