Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

The MAIN switch can be turned ON/OFF, but the ICC system cannot be set even if the SET/COAST switch is pressed.

NOTE: The system cannot be set in the following case.

When the vehicle ahead is not detected below the speed of 32 km/h (20 MPH).
When the selector lever is not in the "D" position or manual mode.
When the brake pedal is depressed.
When the VDC is turned OFF.
When ABS or VDC (including the TCS) operates.
When a wheel slips.
When the drive mode select switch is in SNOW position.
When ABS warning lamp is ON.

CHECK CAUSE OF AUTOMATIC CANCELLATION
Check if there is the cancellation cause in the "CAUSE OF AUTO-CANCEL" on "WORK SUPPORT" of "ICC/ADAS" with CONSULT.

Is it displayed?

NO

GO TO 2.

"OPE SW VOLT CIRC"

Refer to DTC Logic .

"VHCL SPD UNMATCH"

Refer to DTC Logic .

"IGN LOW VOLT"

Refer to DTC Logic .

"ECM CIRCUIT"

Refer to DTC Logic .

"CAN COMM ERROR"

Refer to DTC Description .

"ICC SENSOR CAN COMM ERR"

Refer to DTC Logic .

"ABS/TCS/VDC CIRC"

Refer to DTC Logic .

"ECD CIRCUIT"

Refer to DTC Logic .
PERFORM THE SELF-DIAGNOSIS
1. Perform "All DTC Reading".
2. Check if any DTC is detected in "Self Diagnostic Result" of "ICC/ADAS"" or "LASER/RADAR". Refer to DTC Index (ICC/ADAS) or DTC Index (LASER/RADAR).
Is any DTC detected?

YES

GO TO 3.

NO

GO TO 4.
REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts identified by the self-diagnosis result.

GO TO 6.
CHECK EACH SWITCH AND VEHICLE SPEED SIGNAL
1. Start the engine.
2. Check that the following items operate normally in "DATA MONITOR" of "ICC/ADAS".
  - "VHCL SPEED SE"
  - "D RANGE SW"
  - "SET/COAST SW"
  - "BRAKE SW"
  - "PKB SW"
Is there a malfunctioning item?

All items are normal

GO TO 5.

"VHCL SPEED SE"

Refer to DTC Logic .

"D RANGE SW"

Refer to DTC Logic .

"SET/COAST SW"

Refer to DTC Logic .

"BRAKE SW"

Refer to DTC Logic .

"PKB SW"

Refer to Diagnosis Procedure (Type 1) or Diagnosis Procedure (Type 2).
REPLACE ADAS CONTROL UNIT
Replace the ADAS control unit. Refer to Removal and Installation .

GO TO 6.
CHECK ICC SYSTEM
1. Erase the self-diagnosis results, and then perform "All DTC Reading" again after performing the action test. (Refer to Description for action test.)
2. Check that the ICC system is normal.
INSPECTION END