Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information FSM-C1A6787

Condition
Forward Sensing Module (FSM) communicates with forward-sensing radar.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- No communication with the forward facing radar.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Control module supplied with power for at least 5 seconds.
- The system voltage is greater than 8.0 V.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- None.

Possible source
- Damaged fuse.
- Short-circuit to ground or supply voltage in the signal cable.
- Contact resistance or oxidation in the connectors.
- Damaged forward-sensing radar.

Fault symptom[s]
- AQ, Cruise control/Does not engage
- 1T, Warning lights and chimes/Front monitoring/Active safety indication/no indication
- CJ, Warning lights and chimes/Bulb failure indication/no indication
- Collision avoidance driver support; No Functionality
- IV, Text window and warning symbol/Text message
- 5B, Road Sign Information (RSI)/Does not work
- 5A, Lane Keeping Aid (LKA)/Does not work