FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Home >> Volvo >> 2001 >> V70 XC AWD L5-2.4L Turbo VIN 58 B5244T3 >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> CEM Codes (Central Electronic Module) >> CEM-1A5F >> Communication With the ABS Control Module. Signal Missing. Intermittent Fault >> Signal Missing. Intermittent Fault

Signal Missing. Intermittent Fault






Signal missing. Intermittent fault

Checking power supply and ground





Checking control module power supply and ground terminals. Intermittent fault

Checking power supply and ground terminals
Check ABS control module connector for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check fuse 11/9 in the fusebox in the passenger compartment for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check power supply cable between fuse 11/9 and control module #A4 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check ground terminal 31/95 for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults Check ground terminal 31/95 and control module #A8 and #A24 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the ABS breakout box Pinout Values and Diagnostic Parameters.
- For information about signals, see Signal specification, ABS control module Signal Specification.






Continue - Fault Found

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FAULT FOUND - DONE

No Fault Found - Checking the connectors

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Checking the connectors
Check connector 54/3 and the connector in the ABS control module. Check for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Check for loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Remedy if necessary.
Check for any damage.

Hint: If the fault cause is found, reinstall the components, connectors etc.
If the fault cause is not found, do not reinstall the ABS module.

Other information:
- To access the ABS control module connector, see
- To access connector 54/3, see the relevant wiring diagrams. (Also see illustration.).









Was a fault detected?

Yes - DONE

No - Open-circuit in the control area network (CAN) bus. High speed network

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Open-circuit in the control area network (CAN) bus. High speed network





Open-circuit in Control area network bus. High speed network. Intermittent fault

Checking the high speed network
The fault source on the bus cable may be a long way from where the check is carried out. Therefore start the check at one end of the cable and work through the bus system methodically until the fault is found.

Other information
- To access the bus cable see the relevant wiring diagram.
Check the bus cable for open-circuits and loose connections according to: Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults Remember that the CAN network is only a communication network. There are no fuses, contact breakers or sensors on the CAN bus.

Hint: If the fault is detected before all the following cables have been examined, the following cables need not be checked.

Hint: If possible, measure from the rear of the affected connectors so that they are not damaged.

The following cables and connectors must be examined to localize the open-circuit:

Cable between:
- Electronic throttle module (ETM) terminal #4 and Engine control module (ECM) terminal #55A.
To connect the breakout box to the Electronic throttle module (ETM), see: Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
To connect the breakout box to the Engine control module (ECM), see: Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- Electronic throttle module (ETM) terminal #3 and Engine control module (ECM) terminal #37A.
To connect the breakout box to the Electronic throttle module (ETM), see: Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
To connect the breakout box to the Engine control module (ECM), see: Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
Note! Applies only to automatic transmissions.

Engine control module (ECM) #1B and transmission control module (TCM) terminal #1B.
To connect the breakout box to the Engine control module (ECM), see: Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
To connect the breakout box to the Transmission control module (TCM) (AW), see: Connecting breakout box, Transmission control module (TCM) Connecting Breakout Box, Transmission Control Module (TCM)
To connect the breakout box to the Transmission control module (TCM) (GM), see:
Note! Applies only to automatic transmissions.

Engine control module (ECM) terminal #13B and transmission control module (TCM) and terminal #13B.
To connect the breakout box to the Engine control module (ECM), see: Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
To connect the breakout box to the Transmission control module (TCM) (AW), see: Connecting breakout box, Transmission control module (TCM) Connecting Breakout Box, Transmission Control Module (TCM)
To connect the breakout box to the Transmission control module (TCM) (GM), see:
Note! Applies only to automatic transmissions.

Transmission control module (TCM) terminal #2B and Anti-lock brake system module (ABS) terminal #10 (or terminal #20 if the vehicle has a button with the text "DSTC" on the centre console).
To connect the breakout box to the Transmission control module (TCM) (AW), see: Connecting breakout box, Transmission control module (TCM) Connecting Breakout Box, Transmission Control Module (TCM)
To connect the breakout box to the Transmission control module (TCM) (GM), see:
To connect the breakout box to the Anti-lock brake system module (ABS), see: Connecting the ABS breakout box Pinout Values and Diagnostic Parameters
Note! Applies only to automatic transmissions.

Transmission control module (TCM) terminal #14B and Anti-lock brake system module (ABS) terminal #11 (or terminal #19 if the vehicle has a button with the text "DSTC" on the centre console).
To connect the breakout box to the Transmission control module (TCM) (AW), see: Connecting breakout box, Transmission control module (TCM) Connecting Breakout Box, Transmission Control Module (TCM)
To connect the breakout box to the Transmission control module (TCM) (GM), see:
To connect the breakout box to the Anti-lock brake system module (ABS), see: Connecting the ABS breakout box Pinout Values and Diagnostic Parameters
Note! Applies only to manual transmissions.

Engine control module (ECM) terminal #1B and Anti-lock brake system module (ABS) terminal #10 (or terminal #20 if the vehicle has a button with the text "DSTC" on the centre console).
Engine control module (ECM) terminal #13B and Anti-lock brake system module (ABS) terminal #11 (or terminal #19 if the vehicle has a button with the text "DSTC" on the centre console).
To connect the breakout box to the Engine control module (ECM), see: Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
To connect the breakout box to the Anti-lock brake system module (ABS), see: Connecting the ABS breakout box Pinout Values and Diagnostic Parameters
- Central electronic module (CEM) terminal #18B and Anti-lock brake system module (ABS) terminal #10 (or terminal #20 if the vehicle has a button with the text "DSTC" on the centre console) and intermediate connector 54/3R.
For connecting breakout box to Central Electronic Module (CEM): Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
To connect the breakout box to the Anti-lock brake system module (ABS), see: Connecting the ABS breakout box Pinout Values and Diagnostic Parameters
- Central electronic module (CEM) terminal #17B and Anti-lock brake system module (ABS) terminal #11 (or terminal #19 if the vehicle has a button with the text "DSTC" on the centre console) and intermediate connector 54/3R.
For connecting breakout box to Central Electronic Module (CEM): Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
To connect the breakout box to the Anti-lock brake system module (ABS), see: Connecting the ABS breakout box Pinout Values and Diagnostic Parameters

Was a fault detected?

Yes - Fault Found

No - No Fault Found

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FAULT FOUND - DONE

No Fault Found - Fault-tracing information

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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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FAULT FOUND - Fault Found

Attempt New Test - Checking power supply and ground

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