Signal Too Low
Signal too low
Checking the function of the kickdown switch
- Ignition on
- Go into scrolling values
- Read off the position of the kickdown switch.
The reading should only be ON if the accelerator pedal (AP) is depressed to the kickdown position. For other accelerator pedal (AP) positions the reading should be OFF.
Are the correct values displayed?
Yes - Checking the kickdown switch (KD) and the throttle position (TP) sensor signal
No - Checking the resistance of the kickdown switch
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Checking the kickdown switch (KD) and the throttle position (TP) sensor signal
- Ignition on
- Go into scrolling values
- Read off the positions of the throttle position (TP) sensor and the kickdown switch.
Depress the accelerator pedal (AP) to just before kickdown position. Check that the throttle position (TP) sensor reads approximately 100% open throttle.
Note! The kickdown switch should not be activated during the test, it should read OFF.
Is the value OK?
Yes - Intermittent fault
No - Checking the accelerator pedal (AP), throttle cable and throttle
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Checking the resistance of the kickdown switch
- Ignition off
- Disconnect the kickdown switch.
Connect an ohmmeter between kickdown switch terminals 1 and 2.
Fully depress the kickdown switch (KD).
The ohmmeter should read approximately 0 ohms with the kickdown switch (KD) fully depressed and infinite resistance in the released position.
Is the correct reading displayed?
Yes - Checking for a short-circuit
No - Replacing the component
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Checking for a short-circuit
Check the cable between kickdown switch (KD) terminal #2 and control module terminal #23. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
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Replacing the component
- Ignition off.
Try a new throttle cable and kickdown switch according to Replacing the kickdown switch Service and Repair.
Continue - Verification
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Fault-tracing information
The cause of the diagnostic trouble code (DTC) was incorrect adaptation of the throttle position (TP) sensor signal.
Continue - FAULT FOUND
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Checking the accelerator pedal (AP), throttle cable and throttle
Check that the throttle is fully open when the accelerator pedal (AP) is depressed to kickdown position. Remedy as necessary.
Continue - Verification
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Verification
Verification
Hint: After repairs have been completed, they must be verified as follows to ensure that the fault has been eliminated:
- Ignition off
- Reinstall the connectors, components etc.
- Ignition on
- Go into scrolling values.
Read off the position of the throttle position (TP) sensor. Check that the throttle position (TP) sensor reads approximately 100 % open throttle.
Note! The kickdown switch should not be activated during the test, it should read OFF.
Is the value OK?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - 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 function of the kickdown switch
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Intermittent fault
- Check that the kickdown switch (KD) and the cable sleeve are not sticking
- Check the cable between kickdown switch (KD) terminal #2 and control module terminal #23. Check for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Continue - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
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