Knock Sensor: Testing and Inspection
DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDUREWith Consult
(1) Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT
(2) Start engine and run it for at least 5 seconds at idle speed.
OR
With GST
(1) Start engine and run it for at least 5 seconds at idle speed.
(2) Select "MODE 3" with GST
OR
Without Scan Tools
(1) Start engine and run it for at least 5 seconds at idle speed.
(2) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
(3) Perform "Diagnostic Test Mode II" (Self-diagnostic results) with ECM.
CIRCUIT DIAGRAM
DIAGNOSTIC PROCEDURE
COMPONENT INSPECTION
Knock sensor
- Use an ohmmeter which can measure more than 10 M Ohms.
1. Disconnect knock sensor harness connector.
2. Check resistance between terminal (1) and ground.
Resistance: 500 - 620 k Ohms [at 25°C (77°F)]
CAUTION:
Do not use any knock sensors that have been dropped or physically damaged. Use only new ones.