Part 4
Signal too low (Continued)
Connecting test box
951 1351 ADAPTOR 86-PIN 951 1351 Adaptor 86-Pin 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428
Connecting up the Test box to Fenix 5.2
Is the test box connected to the control module?
Yes - FAULT FOUND
No - Connecting test box to connector B (grey)
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Connecting test box to connector B (grey)
- Ignition off.
- Disconnect control module.
- Connect adapter 951 1351 ADAPTOR 86-PIN 951 1351 Adaptor 86-Pin to control module connector.
- Connect test box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to adapter, connector B.
Press Continue.
Continue - No Fault Found
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FAULT FOUND - Checking signal cable resistance to ground
No Fault Found - Checking signal cable resistance to ground
FAULT-TRACING FAILED - Checking signal cable resistance to ground
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Connecting the breakout box
FAULT FOUND - Checking signal to the transmission control module (TCM)
No Fault Found - Checking signal to the transmission control module (TCM)
FAULT-TRACING FAILED - Checking signal to the transmission control module (TCM)
CONNECTED - Checking signal to the transmission control module (TCM)
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Connecting test box
CONNECTED - Checking voltage drop over the engine control module (ECM) signal ground
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Connecting the breakout box
CONNECTED - Checking voltage drop over the transmission control module (TCM) signal ground
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Signal faulty. Permanent fault
2-4-3 TP sensor signal
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
20 - 40 ohm - Wait 4 minutes with ignition off and then try again.
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Checking for open-circuit
- 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.
Press Continue when fault is repaired.
Continue -
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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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