Part 3

Signal too high (Continued)

Fault tracing information

Power latch
The obtained reading, 20 - 40 ohms, could be caused by the Power latch which is a built-in function in the control module.
The control module switches to Power latch 4 minutes after the engine stops.
- Wait 4 minutes with ignition off.

Press Continue.

Continue - DONE

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DONE -

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Checking ground lead

- Ignition off.
- Disconnect TP sensor.

- Connect an ohmmeter between connector terminal 1 and ground.

Ohmmeter should read approx. 0 ohms.

OK -

Not OK - Check lead between #A18 and sensor terminal 1 for open circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault

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Checking supply lead

- Disconnect TP sensor.
- Ignition on.

- Connect a voltmeter across connector terminals 1 and 2.

Voltmeter should read approx. 5 V.

OK -

Low -

High - Check lead between #A15 and connector terminal 2 for short circuit to supply as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

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Checking for short-circuit

- Check lead between #A15 and connector terminal 2 for short-circuit to supply as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Press Continue when fault is repaired.

Continue -

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Checking supply lead resistance to ground

- Ignition off.
- Disconnect TP sensor.
- Disconnect control module.

- Connect an ohmmeter between connector terminal 2 and ground.

Ohmmeter should read infinite resistance.

OK - Check lead between #A15 and connector terminal 2 for open circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault

Not OK -
Check lead between #A15 and connector terminal 2 for short circuit to ground as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

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Checking for open-circuit

- Check lead between #A15 and connector terminal 2 for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault

Press Continue when fault is repaired.

Continue -

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Checking for short-circuit

- Check lead between #A15 and connector terminal 2 for short-circuit to ground as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Press Continue when fault is repaired.

Continue -

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Checking signal lead resistance to ground

- Ignition off.
- Disconnect TP sensor.

- Connect an ohmmeter between connector terminal 3 and ground.

Ohmmeter should read 50 - 300 kohms.

OK -

Low - Check lead between #A16 and TP sensor terminal 2 for short-circuit to ground as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

High - Check lead between #A16 and connector terminal 3 for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

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Checking for open-circuit

- Check lead between #A16 and connector terminal 3 for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Press Continue when fault is repaired.

Continue -

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Checking for short-circuit

- Check lead between #A16 and TP sensor terminal 3 for short-circuit to ground as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Press Continue when fault is repaired.

Continue -

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Checking signal lead

- Ignition on.
- Disconnect TP sensor.

- Connect a voltmeter between connector terminal 3 and ground.

Voltmeter should read approx. 0 V.

OK -

Not OK -

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Checking for short-circuit

- Check lead between #A16 and connector terminal 3 for short-circuit to supply as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Press Continue when fault is repaired.

Continue -

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Checking TP sensor signal

- Ignition off.
- Connect TP sensor.

Note! See Communication with control module Communication With Control Module for conditions regarding communication.

Activate instrument, by selecting VST symbol.
- Ignition on.
- Read TP sensor value.

Reading should be approx. 0.4 V at idling and increase to approx. 4.0 V at WOT.

OK - DTC was due to poor connections in TP sensor connector.Treat connector for contact resistance and oxidation as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Not OK - Try another TP sensor.

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Checking for contact resistance and oxidation
DTC was set due to poor connections in TP sensor connector.
- Treat connector for contact resistance and oxidation as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Press Continue when fault is repaired.

Continue - FAULT FOUND

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Replacement of component
- Try another TP sensor.

Press Continue when fault is repaired.

Continue -

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Checking TP sensor signal

Hint: TP sensor may break if the signal lead is short-circuited to supply.
Check sensor as below:

- Ignition off.
- Connect TP sensor.

Press Continue.

Continue - FAULT FOUND

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