(DME) Condition For Fault Memory - at Start of Diagnostics

277A - P1434

Information saved in
DME

Fault code
277A - P1434

Fault text
DMTL pump, moisture termination

Fault description


Condition for fault identification
Test condition:
v = 0,
n=0,
pumg >= K_DMTL_P_Min,
K_DMTL_FST_Min <= tank fuel level <= K_DMTL_FST_Max,
K_DMTL_TEMP_Min <= tumg <= K_DMTL_TEMP_Max,
tmot_start >= K_DMTL_TEMP_Start_Min

Terminal condition: Terminal 15 OFF

Voltage condition:
K_DMTL_Plus_Min <= ub <= K_DMTL_Plus_Max

Condition for fault memory entry
Current fluctuation > K_DMTL_I_REF_DIFF during
reference leak measurement at start of diagnostic routine

Action in service
1. Delete stored DTCs from error memory, perform DMTL
system test
2. Check plug and wiring harness on and leading to the
DMTL module
3. Replace DMTL module

Fault effect and breakdown warning
Tank leak diagnosis fails to complete routine, readiness is
not set

Driver information
Warning light:
No

Service instruction
none