P0325
DTC P0325: KS Circuit Malfunction1. Reset the ECM/PCM.
2. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
3. Hold the engine at 3,000 - 4,000 rpm for at least 60 seconds.
Is DTC P0325 indicated?
YES - Go to step 4.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the knock sensor and at the ECM/PCM.
4. Turn the ignition switch OFF.
5. Disconnect the knock sensor connector.
6. Check for continuity between ECM/PCM connector terminal C3 and body ground.
Is there continuity?
YES - Repair short in the wire between the ECM/PCM (C3) and the knock sensor.
NO - Go to step 7.
7. connect knock sensor connector terminal No.1 to body ground with a jumper wire.
8. Check for continuity between ECM/PCM connector terminal C3 and body ground.
Is there continuity?
YES - Go to step 9.
NO - Repair open in the wire between the ECM/PCM (C3) and the knock sensor.
9. Substitute a known-good knock sensor and recheck.
Is DTC P0325 indicated?
YES - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/PCM.
NO - Replace the original knock sensor.