2018 / ECLIPSE CROSS / EC - Workshop Manual
13 -FUEL > 13A-DIRECT INJECTION AND MULTIPOINT FUEL INJECTION (DI AND MPI) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > CODE NO. P0328 DETONATION SENSOR CIRCUIT HIGH INPUT
Code No. P0328: Detonation Sensor Circuit High Input
OPERATION
- The sensor signal is input to the engine-ECU connector terminal K/S from the detonation sensor.
- The power voltage is earthed to the engine-ECU connector terminal K/SE from the detonation sensor.
FUNCTION
- The detonation sensor detects the vibration of the cylinder block caused by detonation waves, and inputs a signal to the engine-ECU.
- In response to the signal, the engine-ECU provides controls to retard the ignition timing when the detonation occurs.
TROUBLE JUDGEMENT
Check Condition
- More than 2 seconds have passed since the engine starting sequence was completed.
Judgement Criterion
- Detonation sensor output voltage is more than 2.25 V for 2 seconds.
FAIL-SAFE AND BACKUP FUNCTION
- Fix the ignition timing with an allowance against detonation.
- Torque is restricted.
PROBABLE CAUSES
- Short circuit in detonation sensor circuit or loose connector contact
- Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check of short to power supply in K/SE line between detonation sensor connector and engine-ECU connector.
Is the check result normal?
Go to Step 2.
Repair the connector(s) or wiring harness.
STEP 2. Check of short to power supply in K/S line between detonation sensor connector and engine-ECU connector.
Is the check result normal?
Go to Step 3. Repair the connector(s) or wiring harness.
STEP 3. M.U.T.-IIISE diagnosis code
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