Dtc C1091 / C1094: Ecm Data In Can Line Failure / Invalid Torque Control Communication With Ecm - Suzuki Swift Sport 2004 Service & Repair Manual

4F-48 Electronic Stability Program:
DTC C1091 / C1094: ECM Data in CAN Line Failure / Invalid Torque Control Communication with
ECM
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
C1091:
ECM sent invalid signal to ESP® control module.
C1094:
Reception error of torque control signal with ECM
DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
2 DTC check for ESP®
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ESP®.
Is DTC C1090 detected?
3 DTC check other control module than ESP®
1) Check DTC for ECM.
Is there any DTC(s)?
Action
Trouble Area
• Engine control system
• ECM
• ESP® control module
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
Go to applicable DTC
diag. flow.
S7RS0B4604041
No
Go to "Electronic
Stability Program
System Check".
Go to step 3.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.