Internal Fault
Internal fault
Checking wiring and connectors
(For XC90 the fault-tracing refers to the rear movement sensor.)
Check the signal cable between the upper electronic module (UEM) connector terminal #22 (22) and movement sensor terminal connector terminal #3. Check for an open-circuit. Check for an intermittent open-circuit.
Also check the relevant connectors. Check for oxidation.
Other information:
- To connect the breakout box: Connecting the breakout box Connecting the Breakout Box
- For information about upper electronic module (UEM) signals: Signal specification Signal Specification, Upper Electronic Module (UEM)
- Movement sensor/Volume sensor/ Mass movement sensor (MMS), replace Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals.
Was a fault detected?
Yes - Verification
No - Checking wiring and connectors
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Checking wiring and connectors
(For XC90 the fault-tracing refers to the rear movement sensor.)
Check the signal cable. Check for a short-circuit to supply voltage. Check for an intermittent short-circuit to supply voltage.
Other information:
- To connect the breakout box: Connecting the breakout box Connecting the Breakout Box
- For information about upper electronic module (UEM) signals: Signal specification Signal Specification, Upper Electronic Module (UEM)
- Movement sensor/Volume sensor/ Mass movement sensor (MMS), replace Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals
Was a fault detected?
Yes - Verification
No - Checking wiring and connectors
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Checking wiring and connectors
(For XC90 the fault-tracing refers to the rear movement sensor.)
Check the power supply cable between upper electronic module (UEM) connector terminal #10 and movement sensor connector terminal #1. Check for an open-circuit. Check for a short-circuit to ground. Check for an intermittent open-circuit.
Other information:
- To connect the breakout box: Connecting the breakout box Connecting the Breakout Box
- For information about upper electronic module (UEM) signals: Signal specification Signal Specification, Upper Electronic Module (UEM)
- Movement sensor/Volume sensor/ Mass movement sensor (MMS), replace Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals
Was a fault detected?
Yes - Verification
No - Checking wiring and connectors
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Checking wiring and connectors
(For XC90 the fault-tracing refers to the rear movement sensor.)
Check the ground lead between movement sensor connector terminal #5 and the ground terminal 31/83. Check for an open-circuit. Check for an intermittent open-circuit.
Check in particular intermediate connector (54/13:20) in the cable harness.
If no fault was found, try a new sensor.
Other information:
- To connect the breakout box: Connecting the breakout box Connecting the Breakout Box
- For information about upper electronic module (UEM) signals: Signal specification Signal Specification, Upper Electronic Module (UEM)
- Movement sensor/Volume sensor/ Mass movement sensor (MMS), replace Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals
Continue - Verification
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
To check the mass movement sensor (MMS) in the S60/S80/V70/XC70
- Check that the function for reduced alarm is not activated (button on 7 in row).
- Open the driver's window, close all doors and hatches. Lock the vehicle using the remote control.
- Wait 25 seconds until the alarm is active. Then trigger the alarm by waving your arm inside the vehicle. The siren or horn must sound and the hazard warning lamps flash. Reset the alarm by pressing the unlocking button on the remote control.
- Check that the mass movement sensor (MMS) has triggered the alarm via the read out of the alarm cause in Vehicle communication.
To check the mass movement sensor (MMS) in the XC90
- Check that the function for reduced alarm is not activated (button on 7 in row).
- Open the driver's window and the rear window on the driver's side. Lock the vehicle using the remote control.
- Wait 25 seconds until the alarm is active. Then trigger the alarm by waving your arm through the driver's door window, inside the vehicle above the front seats. The siren or horn must sound and the hazard warning lamps flash.
- Reset the alarm by pressing the unlocking button on the remote control. Lock the vehicle again.
- Wait 25 seconds until the alarm is active. Then trigger the alarm by waving you arm, through the rear door window on the driver's side, inside the vehicle above the cargo compartment. The siren or horn must sound and the hazard warning lamps flash. Reset the alarm by pressing the unlocking button on the remote control.
- Check that the front and rear mass movement sensor (MMS) has triggered the alarm the last two times via the read out of the alarm cause in Vehicle communication.
Is the function OK?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - Fault Found
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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 - FAULT-TRACING FAILED
No - Attempt New Test
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Attempt New Test - Checking wiring and connectors
FAULT-TRACING FAILED - No Fault Found
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