Faulty Signal. Intermittent Fault
Faulty signal. Intermittent fault
Checking the wiring and component
- Ignition off
- Check the control module and knock sensor (KS) connectors. Check for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the signal cable between control module terminal #51 and knock sensor (KS) terminal #1. Check for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the ground lead between control module terminal #76 and knock sensor (KS) terminal #2. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the screened cable for the knock sensor (KS) between control module terminal #19 and knock sensor (KS) terminal #3. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check that the knock sensor (KS) is not loose.
Try a new knock sensor (KS) if no fault is found during the above fault-tracing.
Remedy as necessary.
Other information
- To connect the breakout box and access the control module, see Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000
- To access or replace the knock sensor (KS), see Replacing the knock sensor (KS) Service and Repair.
Continue - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - Checking the wiring and component
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