Rail Pressure Control Fault (Too Slow
Pressure Build Up while Cranking)
Trouble Code and Symptom
P1191
Rail Pressure Build Up - Too Slow
Diagnosis Procedures
1. Diagnosis Procedures (Rail Pressure Control)
Read DTC
Rail preaaure sensor or IMV
Related DTC?
NO
Rail Pressure Sensor
Problem?
NO
Check transfer fuel system
DIAGNOSIS
DI ENG SM - 2004.4
Trouble Code
YES
Refer to IMV
diagnosis
YES
Repair or
replace
Symptom
Unable Accelerometer Decoding
Unable Dynamic Leak of Injector #1
Unable Dynamic Leak of Injector #2
Unable Dynamic Leak of Injector #4
Unable Dynamic Leak of Injector #5
Unable Dynamic Leak of Injector #3
Unable Cylinder Balancing
Unable Accelerometer Learning Strategy
Limited Rail Pressure Mode Operation
Transfer Fuel System
Problem?
NO
Check high pressure fuel
system
H/P Fuel System Problem?
NO
Replace ECU
DI10-133
YES
Repair or
replace
YES
Repair or
replace
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN