1F0533

1F0533 - P1646

Information saved in
DME

Fault code
1F0533 - P1646

Fault text
DME, internal fault, monitoring MSC communication
Malfunction in module R2S2/2

Fault description
The diagnostic function monitors communications of DME
hardware components.

Condition for fault identification
Test condition:
The fault is recognized when interference occurs in
communications between the CPU and a driver circuit.
Potential problem source(s):
- DME defective
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- none

Condition for fault memory entry
This fault is logged in the control module's fault memory
immediately.

Action in service
- Only replace the DME if the fault remains present
continuously or if the fault frequency is greater than 3

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- Breakdown in extreme cases

Driver information
Warning light:
MY10 ECE:
- ECE emissions warning lamp: on
- ECE electronic engine power reduction: off
- CC message: on
MY10 US:
- US emissions warning lamp: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
- none