Greetings Elementals,
Vehicle: 2004 Element
Problem: DTC P0325: Knock Sensor Circuit Malfunction
I could just spend the money for a new knock sensor and see if it fixes the problem after replacement, but I have a multimeter and an AUTEL AutoLink AL439 next generation OBDII & electrical test tool, so I'd prefer to check the circuit for a malfunction first, right?
The DTC code is repeatable, even after clearing the DTC with my scan tool.
I have the Honda service manual, and it states, on page 11-110 of the PGM-FI System subsection of the Fuel and Emissions Section, that after you have established that the DTC is indicated, before you can check the knock sensor circuit for an open or short, you have to "jump the SCS line with the HDS."
There is no explanation in the service manual for alternate methods to "jump the SCS line with the HDS," as a Honda Technician would just use the HDS, which us mere mortal DIYs obviously do not have. In addition, there is no explanation of what this statement even means or why you do it.
However, after some research online, my understanding is that the ECM/PCM can remain active for up to 15 minutes after the ignition is turned off, and that if you do not jump the SCS line with the HDS, you can damage the ECM/PCM by troubleshooting the circuit. Is this correct?
Can someone please solve this mystery for the uninitiated, and tell me how you can "jump the SCS line with the HDS," using some alternate method other than using the HDS?
Can you just wait for at least 15 minutes after turning the ignition off, before testing the circuit?
Can you use the SCS Service connector 07PAZ-0010100, to jump the SCS line with the HDS?
Thanks!
Vehicle: 2004 Element
Problem: DTC P0325: Knock Sensor Circuit Malfunction
I could just spend the money for a new knock sensor and see if it fixes the problem after replacement, but I have a multimeter and an AUTEL AutoLink AL439 next generation OBDII & electrical test tool, so I'd prefer to check the circuit for a malfunction first, right?
The DTC code is repeatable, even after clearing the DTC with my scan tool.
I have the Honda service manual, and it states, on page 11-110 of the PGM-FI System subsection of the Fuel and Emissions Section, that after you have established that the DTC is indicated, before you can check the knock sensor circuit for an open or short, you have to "jump the SCS line with the HDS."
There is no explanation in the service manual for alternate methods to "jump the SCS line with the HDS," as a Honda Technician would just use the HDS, which us mere mortal DIYs obviously do not have. In addition, there is no explanation of what this statement even means or why you do it.
However, after some research online, my understanding is that the ECM/PCM can remain active for up to 15 minutes after the ignition is turned off, and that if you do not jump the SCS line with the HDS, you can damage the ECM/PCM by troubleshooting the circuit. Is this correct?
Can someone please solve this mystery for the uninitiated, and tell me how you can "jump the SCS line with the HDS," using some alternate method other than using the HDS?
Can you just wait for at least 15 minutes after turning the ignition off, before testing the circuit?
Can you use the SCS Service connector 07PAZ-0010100, to jump the SCS line with the HDS?
Thanks!
