Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN WAKE UP CIRCUIT

Turn the ignition switch OFF.
Disconnect steering force control module harness connector and steering angle main control module harness connector.

Check the continuity between steering force control module harness connector and steering angle main control module harness connector.

Steering force control module		Steering angle main control module		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M71	23	E26	23	Existed

Is the inspection result normal?

YES

GO TO STEP 2 .

Repair or replace error - detected parts.

CHECK STEERING ANGLE MAIN CONTROL MODULE SIGNAL

With CONSULT

Connect steering force control module harness connector and steering angle main control module harness connector.
Turn the ignition switch ON.
On the CONSULT screen, select "DAST 1">>"DATA MONITOR">>"SUB IGN VOLTAGE".

Check the value

Monitor item	Standard value (Approx.)
SUB IGN VOLTAGE	Battery voltage

Is the inspection result normal?

YES

GO TO STEP 3 .

Replace steering force control module. Refer to REMOVAL AND INSTALLATION .

PERFORM SELF-DIAGNOSIS FOR STEERING ANGLE MAIN CONTROL MODULE

With CONSULT
1. Turn the ignition switch OFF.
2. Connect steering angle main control module harness connector.
3. Turn the ignition switch ON.
4. Erase self-diagnosis for "DAST 1".
5. Turn the ignition switch OFF and wait for at least 10 seconds.
6. Set the vehicle to READY state or start the engine.
  CAUTION:
  Never drive the vehicle.
7. Perform self-diagnosis for "DAST 1".
Is DTC "C13BD - 00" detected?

YES

Replace steering angle main control module. Refer to REMOVAL AND INSTALLATION .

NO
- Check enlarged contact spring of terminal. Refer to HOW TO CHECK TERMINAL .
- Perform intermittent incident while turning steering wheel. Refer to INTERMITTENT INCIDENT .