Signal Too High
Signal too high
Checking the throttle position (TP) sensor signal
- Ignition on.
- Go into scrolling values.
Read off the position of the throttle position (TP) sensor.
The reading should be approximately 0 % with the accelerator pedal (AP) up.
The value should be approximately 100 % with the accelerator pedal (AP) fully depressed.
Is the correct reading displayed?
Yes - Intermittent fault
No - Connecting the breakout box to the engine control module (ECM)
No - Connecting the breakout box to the engine control module (ECM)
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Connecting the breakout box to the engine control module (ECM)
Connecting the breakout box. FENIX 5.1
951 1358 Adaptor 55-pin ABS Fenix 5.1 S40,V40 951 1358 Adaptor 55-Pin ABS Fenix 5.1 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428
Connecting the breakout box
Information
Connecting up the Test box
Is the test box connected to the control module?
Yes - CONNECTED
No - NOT CONNECTED
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CONNECTED - No Fault Found
NOT CONNECTED -
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Connecting the breakout box to the connector at the engine control module (ECM)
- Ignition off.
- Remove the security strap around the engine control module (ECM). Remove the control module from the bracket.
- Disconnect the engine control module (ECM).
- To avoid interfering with the pedals, the cable harness with the control module connector must be pulled over to the right of the center console (left-hand drive) or to the left of the center console (right-hand drive). The connector must be put on the floor.
- Check that the male and female terminals in the control module and the control module connector are intact and secure. Check that the wiring to the female terminals is properly secured to the pins.
- In particular, check the terminal pins relevant to the diagnostic trouble code (DTC) / symptom.
Connect adapter 951 1358 Adaptor 55-pin ABS Fenix 5.1 S40,V40 951 1358 Adaptor 55-Pin ABS Fenix 5.1 to the engine control module (ECM) connector. Connect breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to the adapter.
Continue -
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Checking the ground terminal
- Ignition off.
- Switch of all power consuming components, such as the passenger compartment lighting and the radio.
Connect an ohmmeter between the battery negative terminal and terminals #2 and #3 on the breakout box.
The ohmmeter should read approximately 0 ohms for both readings.
OK - Then return to the fault-tracing procedure where it was interrupted.
No Fault Found
Not OK -
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Checking wiring and terminals
Check the ground terminal (31/7) at the ignition coils for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check the wiring between the ground terminal (31/7) and engine control module (ECM) terminals #2 and #3 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue -
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Verification
Verification
Hint: Check after repair that the fault has been rectified.
- Ignition off.
Connect an ohmmeter between the battery negative terminal and terminals #2 and #3 on the breakout box.
The ohmmeter should read approximately 0 ohms for both readings.
OK - VERIFIED
Not OK - VERIFICATION FAILED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED -
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Fault-tracing information
Information
Fault-tracing information
The fault should be diagnosed and remedied. Since this is not the case the fault-tracing process has failed.
Complete the fault-tracing for those fault or try again.
Do you want to terminate fault-tracing at this time?
Yes - Exit fault-tracing
No - Attempt New Test
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Attempt New Test -
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CONNECTED - Checking the signal cable for a short-circuit to supply voltage
FAULT FOUND - Checking the signal cable for a short-circuit to supply voltage
FAULT-TRACING FAILED - Checking the signal cable for a short-circuit to supply voltage
No Fault Found - Checking the signal cable for a short-circuit to supply voltage
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Checking the signal cable for a short-circuit to supply voltage
- Engine control module (ECM) connected.
- Ignition on.
Connect an electrician's screwdriver (bulb of at least 3 W) between terminals 2 and 41 on the breakout box.
The bulb should not light. If the bulb lights there is probably a short-circuit to supply voltage in the circuit.
Is the bulb out?
Yes - Checking the signal cable
No - Checking for a short-circuit
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Checking for a short-circuit
Check the cable between automatic transmission control module (TCM) terminal 38 and engine control module (ECM) terminal 41 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
In cars equipped with the DSA anti-spin system, check the circuit for DSA control module terminal 5 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification
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Checking the signal cable
- Ignition off.
- Breakout box connected to the engine control module (ECM).
- Disconnect the engine control module (ECM).
- Ignition on.
Connect a voltmeter between terminals 2 and 41 on the breakout box.
The voltmeter should read approximately battery voltage.
OK - Checking contact resistance and oxidation
Not OK - Checking for an open-circuit
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Checking contact resistance and oxidation
The cause of the diagnostic trouble code (DTC) was loose connections in the control module connector. Check the control module connector for contact resistance and oxidation and remedy according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Continue - Verification
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Checking for an open-circuit
Check the cable between automatic transmission control module (TCM) terminal 38 and engine control module (ECM) terminal 41 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
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.
The reading should be approximately 0 % with the accelerator pedal (AP) up. The value should be approximately 100 % with the accelerator pedal (AP) fully depressed.
Is the correct reading displayed?
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 throttle position (TP) sensor signal
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Intermittent fault
Intermittent fault
Intermittent fault
Check the automatic transmission and engine control module (ECM) connectors for intermittent contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
Check the cable between automatic transmission control module (TCM) terminal 38 and engine control module (ECM) terminal 41 for an intermittent open-circuit 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.
In cars equipped with the DSA anti-spin system, check the circuit for DSA control module terminal 5 for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
Continue - Fault-tracing information
------------------------
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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Attempt New Test - Checking the throttle position (TP) sensor signal
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