Airmatic issue on C350e
03-09-2024, 07:32 AM
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C350e
Airmatic issue on C350e
Hi
New here but spent some time reading up
I have an issue and want to sense check my diagnosis so far
I have error message on dash board for suspension its a 2018 C350e
Coded and have DTC C155E13 - pressure relief valve for system pressure has a malfunction. There is an open circuit
It does not lift or drop automatically - I have ruled out leaks and the valve block works when commanded by the obd coder
The compressor works when i apply 12vdc
So far I have checked fuses 320 25A, 114 40A and relay R all got continuity and 12v in the right place and relay operates when forced on obd coder
Voltage check at compressor relief valve i only get 5.5vdc ?
Removed compressor checked pressure relief valve which clicks when 12vdc is applied
My question is:
Should i expect 12vdc at the pressure relief solenoid plug? I dont have a wiring diagram so not sure where this goes back to (i assume a relay and not the control unit under the carpet)?
any experience would be helpful
Thank you in advance
Mark
New here but spent some time reading up
I have an issue and want to sense check my diagnosis so far
I have error message on dash board for suspension its a 2018 C350e
Coded and have DTC C155E13 - pressure relief valve for system pressure has a malfunction. There is an open circuit
It does not lift or drop automatically - I have ruled out leaks and the valve block works when commanded by the obd coder
The compressor works when i apply 12vdc
So far I have checked fuses 320 25A, 114 40A and relay R all got continuity and 12v in the right place and relay operates when forced on obd coder
Voltage check at compressor relief valve i only get 5.5vdc ?
Removed compressor checked pressure relief valve which clicks when 12vdc is applied
My question is:
Should i expect 12vdc at the pressure relief solenoid plug? I dont have a wiring diagram so not sure where this goes back to (i assume a relay and not the control unit under the carpet)?
any experience would be helpful
Thank you in advance
Mark
Last edited by mdsparky; 03-09-2024 at 07:53 AM.
