2004 xc90 electrics

[nathan1]

Is there anything I can do to find out which module is at fault can I disconnect icm drive car see if that does owt

[Clan]

Originally Posted by nathan1

Rac mechanic said it’s a communication fault I m not wanting to send parts off if there not at fault I m getting to point of getting rid of it

yes but what is not communicating with what?

[nathan1]

Cem-ecu faulty signal

[nathan1]

Diagnostic Codes
RAC DIAGNOSTIC SYSTEM
System Type: ENGINE SYSTEM TEST/VALUES
Name: D5244T - EDC 15C11 - 2.4L - 120 (163)
DTC: 5340,Communication CEM-ECU, faulty signal
DTC: 6805,Boost pressure regulation, incorrect flow
DTC: 2505,Fuel Rail/System Pressure - Too Low
DTC: 2501,Fuel Rail/System Pressure - Too High
DTC: 1300,Mass air flow sensor circuit invalid signal
DTC: 9210,Cruise control; value not plausible
DTC: 2503,Fuel Rail/System Pressure - Too Low
DTC: 940A,Brake pedal sensor; signal not feasible
System Type: BRAKES
Name: ABS (BCM) - MARK 25
DTC: 0112,Active Yaw and/or Roll Control Disabled
DTC: 0094,Communication, CAN bus
DTC: 0109,Communication, CAN bus
DTC: 0100,Communication, CAN bus
DTC: 0150,Brake light switch, implausible signal
DTC: 0114,Communication active yaw rate control sensor (AYC). Signal missing
System Type: STEERING
Name: STEERING ANGLE - DIAGNOSE DSTC
DTC: 000E,Control unit
DTC: 0007,Control unit
DTC: 0018,Control unit
System Type: STEERING
Name: STEERING ANGLE - STEERING ANGLE SENSOR (SAS)
DTC: 000E,Angle sensor steering wheel
DTC: 0007,ECU
DTC: 0018,ECU
System Type: IMMOBILISER
Name: IMMOBILISER - DIAGNOSE (CEM)
DTC: 1F00,ECU, software fault
DTC: 8C12,Rear fog switch. Too low signal
DTC: 1A66,Communication with ICM, infotainment control module
DTC: 9C01,Glovebox light switch
DTC: 6C49,Transponder communication, signal incorrect
DTC: 1A5A,Communication with REM, Rear Electronic Module
DTC: E001,(CAN) and (ECU) communications failure
DTC: 7A05,Carphone YES button, activated too long
DTC: 1A52,Communication with DDM, Driver Door Module
DTC: 1A56,Communication with DIM, Driver Information Module (instrument)
DTC: DD421,unknown
System Type: AIRBAG ELECTRONICS (SRS)
Name: AIRBAG - P2X
DTC: E003,Configuration fault. Incorrect configuration
DTC: E001,Communication control module. Faulty communication
DTC: 00E5,CAN signal. malfunction
DTC: 00D5,SRS-light. Signal missing
System Type: SOUND SYSTEM
Name: INFOTAINMENT - INFOTAINMENT MODULE (ICM) (ICM)

[gmonag]

The RAC report suggests faulty body control module. That is the CEM, which is the module that controls all the communications.

Look for corrosion at the CEM.

[nathan1]

that would cause the clocks to keep blacking out as well

[Clan]

too much info there , it looks like the car has not been looked at for a long long time , it needs all those codes erasing and just see what comes back immediately after . a lot of those codes could be genuine ie , multiple faults with the car ..

[nathan1]

Mystery continues after topping up oil as there was none on dipstick and I disconnected icm then connected bk up after 50 miles the electrics are now behaving just got passenger airbag off urgent even tho it’s turned on and anti skid messages still on

[john langrick]

Hi, as already been said, you really need to get all codes reset. Then go from there. Perhaps a friendly local forum member can help?

Without resetting, my view is you are chasing your tail re all the electronics problems.

The oil level is a concern, but do not overfil. It should be below the top mark. Lots of threads on this.

John l