Part 1
Signal too low
Status message
Note! To obtain the correct status message:
- Ignition on.
- Accelerator pedal (AP) up.
- Wait approx. 10 seconds.
- Floor the accelerator pedal (AP), keep it fully depressed in kickdown position.
- Wait approx. 10 seconds.
Read off diagnostic trouble code (DTC).
Is the status PERMANENT FAULT displayed?
Yes - Checking kickdown switch (KD) function
No - Intermittent fault
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Checking kickdown switch (KD) function
- Ignition on.
- Go into scrolling values.
- Read off kickdown switch (KD) position.
The reading should only be ON if the accelerator pedal (AP) is depressed to kickdown position. For other accelerator pedal (AP) positions the reading should be OFF.
Is the correct reading displayed?
Yes - Connecting the breakout box
No - Checking the kickdown switch (KD)
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Checking the kickdown switch (KD)
When the accelerator pedal AP is fully depressed a circuit is made as the sheath on the throttle cable is pressed into the kickdown switch. Releasing the accelerator pedal (AP) allows the cable sheath to spring back and the switch breaks the circuit.
Note! The kickdown switch is operated only when the accelerator pedal (AP) is fully depressed.
Check that the cable sheath is pressed in and springs back when the accelerator pedal (AP) is operated.
Are kickdown switch and cable operation OK?
Yes - Checking kickdown switch (KD) resistance
No - Fault-tracing information
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Fault-tracing information
Repair as necessary.
Select "Continue" when the fault has been repaired.
Continue - Verification
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Checking kickdown switch (KD) resistance
- Ignition off.
- Disconnect the kickdown switch (KD).
Connect an ohmmeter between kickdown switch (KD) terminals 1 and 2.
Fully depress the accelerator pedal (AP).
The ohmmeter should read approx 0 ohms with the accelerator pedal (AP) fully depressed and infinite resistance in all other positions.
Is the correct reading displayed?
Yes - Checking for a short-circuit
No - Replacing component
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Checking for a short-circuit
Check cable between kickdown switch terminal 2 and control module #B30 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select "Continue" when the fault has been repaired.
Continue - Verification
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Replacing component
- Ignition off.
Try a new kickdown switch (KD) according to Kick-down switch/throttle cable, replacing Service and Repair.
Select "Continue" when the fault has been repaired.
Continue - Verification
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Connecting the breakout box
Information
Fault-tracing information
Continued fault-tracing is dependent on the vehicle's engine control module.
Select an engine control module
Fenix 5.2 - Connection of breakout box
EZ-129K - Connection of breakout box
Motronic 4.3 - Connection of breakout box
Motronic 4.4 - Connection of breakout box
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Connection of breakout box
Connection to connector B
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 -
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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 -
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Checking ground point #B28
- Ignition off.
- Switch off anything which might drain the battery, such as courtesy lights and radio.
- Connect control module.
- Using an ohmmeter, take reading between #B28 and battery negative terminal.
Ohmmeter should read approx. 0 ohms.
OK - Go back to fault tracing where you left off.
No Fault Found
Not OK - Check ground points at rear of engine and leads to them for open circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and contact resistance and oxidation as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
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Checking for open-circuit, contact resistance and oxidation
- Check ground points at rear of engine and leads to them for open circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and 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 -
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Verification
Hint: After repair, it is necessary to check that the fault has been corrected.
Perform as described below.
- Ignition off.
- Reconnect connectors, components etc.
- Switch off anything which might drain the battery, such as courtesy lights and radio.
- Connect control module.
- Using an ohmmeter, take reading between #B28 and battery negative terminal.
Ohmmeter should read approx. 0 ohms.
OK - FAULT FOUND
Not OK -
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Troubleshooting 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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No Fault Found - No Fault Found
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Connection of breakout box
Connection of test box, ICM
981 3195 ADAPTOR 981 3195 Adaptor 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428
Connection of test box to ICM
Is test box connected to ICM?
Yes - No Fault Found
No -
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Connection of test box to ICM
- Switch off ignition.
- Disconnect ICM.
- Plug adapter 981 3195 ADAPTOR 981 3195 Adaptor into ICM connector.
- Connect test box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to adapter.
Press Continue.
Continue -
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Checking ground terminals
- Switch off ignition
- Switch off all power consumers, such as interior lighting and radio.
- Use ohmmeter to measure resistance
- between #A20 (A20) on test box and battery negative terminal, and
- between #A29 (A29) on test box and battery negative terminal.
Instrument should indicate approx. 0 ohms in both cases.
OK - Resume fault tracing at point of interruption.
No Fault Found
Not OK - Check ground terminals 31/32 and 31/33 on engine and associated wiring for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and for contact resistance as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.Check ground lead between engine and chassis for open- circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and for contact resistance as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
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Checking for open-circuit
- Check ground terminals 31/32 and 31/33 on engine and associated wiring for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and for contact resistance as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Check ground lead between engine and chassis for open- circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and for contact resistance 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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Troubleshooting Information
Information
Attempt New Test -
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Verification
Hint: After repair, it is necessary to check that the fault has been corrected as described below.
- Switch off ignition
- Reconnect connectors.
- Switch off all power consumers, such as interior lighting and radio.
- Use ohmmeter to measure resistance
- between #A20 (A20) on test box and battery negative terminal, and
- between #A29 (A29) on test box and battery negative terminal.
Instrument should indicate approx. 0 ohms in both cases.
OK - FAULT FOUND
Not OK -
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No Fault Found - No Fault Found
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Connection of breakout box
Connector B
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 Motronic 4.3
Is the test box connected to the control module?
Yes - FAULT FOUND
No -
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Connection of break-out box to connector B (grey)
- Switch off ignition.
- Disconnect ECM.
Note! The ECM must not be removed from the car until the main relay has interrupted the supply. This may take up to 150 seconds after the ignition has been switched off.
- Plug adapter 951 1351 ADAPTOR 86-PIN 951 1351 Adaptor 86-Pin into ECM base and connect break-out box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to adapter.
Press Continue.
Continue -
Continue - Resume fault tracing at point of interruption.
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Checking ground terminal #B28
- Switch off ignition.
- Switch off all power consumers, such as interior lighting and radio.
- Reconnect ECM.
- Use ohmmeter to measure resistance between #28 (#B28) on break-out box and battery negative terminal.
Instrument should indicate approx. 0 ohms.
OK - Resume fault tracing at point of interruption.
No Fault Found
Not OK - Check ground terminals 31/32 and 31/33 at rear of engine and associated wiring for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , and for contact resistance and oxidation as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
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Checking for open-circuit, contact resistance and oxidation
- Check ground terminals 31/32 and 31/33 at rear of engine and associated wiring for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , and 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 -
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Verification
Hint: After repair, it is necessary to check that the fault has been corrected.
Perform as described below.
- Switch off ignition.
- Switch off all power consumers, such as interior lighting and radio.
- ECM connected.
- Use ohmmeter to measure resistance between #28 (#B28) on break-out box and battery negative terminal.
Instrument should indicate approx. 0 ohms.
OK - FAULT FOUND
Not OK -
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Troubleshooting Information
Information
Attempt New Test -
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No Fault Found - No Fault Found
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Connection of breakout box
Connecting breakout box, connector A
Connecting the breakout box
Is the breakout box connected to the Motronic 4.4 connector?
Yes - No Fault Found
No - Connecting breakout box to Motronic 4.4 connector A (black)
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Connecting breakout box to Motronic 4.4 connector A (black)
- Ignition off.
- Disconnect control module.
Note! The engine control module (ECM) must not be removed from the car until the main relay has interrupted its power supply. This may take up to 150 seconds (cars with an immobilizer 245 seconds) after the ignition has been switched off.
Connect adapter 951 1351 ADAPTOR 86-PIN 951 1351 Adaptor 86-Pin to engine control module (ECM) connector and connect breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to adapter.
Continue - Checking ground terminals
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Checking ground terminals
- Ignition off.
- Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).
Connect an ohmmeter between battery negative terminal and:
- #13 (#A13) on the breakout box.
- #28 (#A28) on the breakout box.
- #42 (#A42) on the breakout box.
The ohmmeter should read approximately 0 ohms for all readings.
OK - Reading is OK
Not OK - Checking for an open-circuit
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Checking for an open-circuit
- Check ground terminals 31/32 and 31/33 at rear of engine and their cables for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Check ground lead between engine and chassis for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - No Fault Found
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Reading is OK
- Return to the fault-tracing procedure where it was interrupted.
Continue - No Fault Found
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No Fault Found - No Fault Found
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CONNECTED - Checking voltage drop over the engine control module (ECM) signal ground
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Checking voltage drop over the engine control module (ECM) signal ground.
- Control module connected.
- Ignition on.
- Turn on as many power consuming components as possible.
Connect a voltmeter between ground terminal 31/33 and the breakout box:
- Fenix 5.2: #42 (#A42) signal ground
- LH 3.2: #20 (#A20) signal ground
- Motronic 4.3: #42 (#A42) signal ground
- Motronic 4.4: #42 (#A42) signal ground
Make a note of the voltmeter reading.
Continue - Connecting the breakout box
Connecting the breakout box
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Connecting the breakout box
Connecting the breakout box
981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 981 3195 ADAPTOR 981 3195 Adaptor
Connecting the breakout box (Automatic transmission)
Is the breakout box connected to the control module?
Yes - CONNECTED
No - Connecting the breakout box
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Connecting the breakout box
Connecting the breakout box
981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 981 3195 ADAPTOR 981 3195 Adaptor
Connecting the breakout box
Caution! The control module power supply must be disconnected when connecting or disconnecting the breakout box, otherwise it may be damaged.
- Ignition off
- Disconnect the transmission control module (TCM).
- Connect adapter 981 3195 ADAPTOR 981 3195 Adaptor to transmission control module (TCM) connector and connect breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to adapter.
Note! Ensure that the adaptor is the right way round - with the breakout box cable harness outwards towards the fender.
Select "Continue"
Continue - DONE
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DONE - Checking ground terminals
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