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TEST RESULTS |
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Visually inspect that all the tyres are fitted with pressure sensors. Check that the pressure sensor has not been damaged through incorrect installation Check that the tyre is not visibly damaged by overheating Check that the pressure sensor is not transmitting a temperature inside the tyre that is too high (above 110°C) |
Move on to Step 1 |
1. Tyre does not have a pressure sensor 2. Pressure sensor damaged 3. Tyre damaged by high temperature (above 110°C) |
1. Replace the tyre with one that has a pressure sensor 2.Replace the pressure sensor 3.Replace the tyre if damaged, if not replace the pressure sensor Op. 4450B92 FRONT TYRES PRESSURE TRANSMITTER, (ONE) LH OR RH - R R Op. 4450B93 REAR TYRES PRESSURE TRANSMITTER, (ONE) LH OR RH - R R |
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Check by connecting the Examiner to the tyre pressure monitoring control unit that there are no errors Check that the sensor initialization procedure has been successful |
End of diagnosis |
1. Errors present 2. Sensor initialization has not been successful |
1. Continue as instructed by the diagnostic equipment 2. Carry out the sensor initialization procedure correctly. |
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Using the Examiner, check that the sensor involved does not have a run down battery Check if the sensor has been replaced or the position of one of the wheels has been changed without having carried out the initialization procedure for the sensor on the wheel concerned using the Examiner |
Move on to Step 3 |
1. Sensor battery run down 2. The initialization of the IDs for the wheel transmitters |
1. Replace the front sensor Op. 4450B92 FRONT TYRES PRESSURE TRANSMITTER, (ONE) LH OR RH - R R or the rear sensor Op. 4450B93 REAR TYRES PRESSURE TRANSMITTER, (ONE) LH OR RH - R R 2. Move on to Step 8 to carry out the initialization procedure for the wheel transmitter IDs |
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With the Examiner in active diagnosis, carry out the Aerial activation test and check that it is working properly |
End of diagnosis |
No aerial RF signal |
Move on to Step 4 |
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Check that the aerial is receiving a correct power supply Check the continuity of the power supply wiring Check the continuity of the signal between the tyre pressure monitoring control unit and the activator. Check the insulation of the earth wiring See E7060 TYRE INFLATION PRESSURE CONTROL SYSTEM by carrying out See Test 4450BB TPMS SYSTEM TRANSMITTER AERIAL OPERATION CHECK |
End of diagnosis |
1. Power supply interrupted 2. Earth connection defective 3. Activator signal interrupted 4. Wiring defective 5. Wiring short circuited to earth 6. Aerial defective |
1. Restore correct power supply 2. Restore correct earth connection. 3. Restore signal continuity. 4. Restore or, if necessary, replace wiring 5. Restore wiring insulation 6. Replace the aerial |
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Check that the power supply for the tyre pressure control unit is correct Check the connection to earth for the control unit Check the conformity of the output signals to the aerial Check the wiring continuity Check the insulation of the earth wiring See E7060 TYRE INFLATION PRESSURE CONTROL SYSTEM by carrying out See Test 4450BB TPMS SYSTEM TRANSMITTER AERIAL OPERATION CHECK |
Move on to Step 6 |
1. Supply not correct 2. Earth connection defective 3. Signals interrupted 4. Wiring interrupted 5. Wiring short circuited 6. Tyre inflation pressure control unit defective |
1. Restore correct power supply 2. Restore the correct earth connection. 3. Restore signal continuity 4. Restore wiring continuity 5. Restore the correct wiring insulation. 6. Replace the tyre pressure monitoring control unit Op. 4450B91 TPMS SYSTEM CONTROL UNIT R R |
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Check that the aerial is correctly installed (the aerial wiring should be facing the vehicle interior) |
Move on to Step 7 |
1. Activator incorrectly positioned 2. Activator defective |
1. Position the activator correctly 2. Replace the activator |
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Check for any electromagnetic interference produced by electronic equipment in the vehicle or the immediate vicinity |
Move on to Step 8 |
Electromagnetic fields which interfere with the signal produced by the pressure sensors |
Eliminate the source of the interference as follows: if it can be ascertained that the electromagnetic field that is interfering is coming from the outside, move the vehicle away from that place. If not, search for any RF equipment fitted by the customer and try and deactivate it. |
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Connect the Examiner, enter the Configuration ambient and select Wheel transmitter initialization to obtain the identification of the wheel transmitters for the control unit |
Move on to Step 9 |
Wheel transmitter initialization not carried out |
Carry out wheel transmitter initialization correctly. |
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Check that the system configuration is correct using the Examiner Check the continuity of the two-way serial line between the pressure monitoring control unit and the Body Computer See E7060 TYRE INFLATION PRESSURE CONTROL SYSTEM Check that the serial line is correctly insulated to earth by carrying out See Test 4450BA TPMS CONTROL UNIT OPERATION CHECK |
Move on to Step 10 |
1. Serial line interrupted 2. Serial line short circuited to earth 3. System configuration not correct 4. Tyre inflation pressure control unit defective |
1. Restore the correct continuity 2. Restore the correct insulation 3. Configure the control unit correctly 4. Replace the tyre inflation pressure control unit Op. 4450B91 TPMS SYSTEM CONTROL UNIT R R |
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Delete the errors using the Examiner and check they are no longer present |
End of diagnosis |
Body Computer defective |
Replace the Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R. |