Infiniti QX56 (Z62). Manual - part 330

DAS

C1A15 GEAR POSITION

DAS-357

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

YES

>> GO TO 3.

NO

>> GO TO 7.

3.

CHECK GEAR POSITION

Check that “GEAR” operates normally in “DATA MONITOR” of “ICC/ADAS”. 

CAUTION:

Be careful of the vehicle speed. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK GEAR POSITION SIGNAL

Check that “GEAR” operates normally in “DATA MONITOR” of “TRANSMISSION”. 
Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 6.

5.

CHECK INPUT SPEED SENSOR SIGNAL

Check that “INPUT SPEED” operates normally in “DATA MONITOR” of “TRANSMISSION”. 

Is the inspection result normal?

YES

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

NO

>> GO TO 6.

6.

CHECK TCM SELF-DIAGNOSIS RESULTS

1.

Perform “All DTC Reading”. 

2.

Check if any DTC is detected in “Self Diagnostic Result” of “TRANSMISSION”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

TM-78, "DTC Index"

. 

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

7.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

1.

Perform “All DTC Reading”. 

2.

Check if any DTC is detected in “Self Diagnostic Result” of “ABS”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

BRC-51, "DTC Index"

. 

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

DAS-358

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

C1A24 NP RANGE

C1A24 NP RANGE

DTC Logic

INFOID:0000000006228200

DTC DETECTION LOGIC

NOTE:
If DTC “C1A24” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

DAS-374,

"ADAS CONTROL UNIT : DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC REPRODUCE (1)

1.

Start the engine.

2.

Turn the LDP system ON. 

3.

Wait for approximately 5 minutes or more after shifting the selector lever to “P” position. 

4.

Perform “All DTC Reading” with CONSULT-III. 

5.

Check if the “C1A24” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “C1A24” detected as the current malfunction?

YES

>> Refer to 

DAS-358, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

CHECK DTC REPRODUCE (2)

1.

Wait for approximately 5 minutes or more after shifting the selector lever to “N” position. 

2.

Perform “All DTC Reading”. 

3.

Check if the “C1A24” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “C1A24” detected as the current malfunction?

YES

>> Refer to 

DAS-358, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006228201

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A24” in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

DAS-374, "ADAS CONTROL UNIT : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK NP POSITION SWITCH SIGNAL

Check that “NP RANGE SW” operates normally in “DATA MONITOR” of “ICC/ADAS”. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

3.

CHECK TCM DATA MONITOR

Check that “SLCT LVR POSI” operates normally in “DATA MONITOR” of “TRANSMISSION”. 

Is the inspection result normal?

YES

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

NO

>> GO TO 4.

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A24

(24)

NP RANGE

A mismatch between a shift position signal 
transmitted from TCM via CAN communica-
tion and an current gear position signal contin-
ues for 60 seconds or more

• TCM
• Transmission range switch

DAS

C1A24 NP RANGE

DAS-359

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

4.

PERFORM TCM SELF-DIAGNOSIS

1.

Perform “All DTC Reading”. 

2.

Check if any DTC is detected in “Self Diagnostic Result” of “TRANSMISSION”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

TM-78, "DTC Index"

.

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

DAS-360

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

C1A50 ADAS CONTROL UNIT

C1A50 ADAS CONTROL UNIT

DTC Logic

INFOID:0000000006223761

DTC DETECTION LOGIC

NOTE:
If DTC “C1A50” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

DAS-374,

"ADAS CONTROL UNIT : DTC Logic"

. 

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the LDP system ON.

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “C1A50” is detected as the current malfunction in “Self Diagnostic Result” of “LANE CAM-
ERA”. 

Is “C1A50” detected as the current malfunction?

YES

>> Refer to 

DAS-360, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006223762

1.

CHECK LANE CAMERA UNIT SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A50” in “Self Diagnostic Result” of “LANE CAMERA”. 

Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

DAS-374, "LANE CAMERA UNIT : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “ICC/ADAS”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

DAS-310, "DTC Index"

. 

NO

>> Replace the lane camera unit. Refer to 

DAS-403, "Removal and Installation"

. 

DTC

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A50

ADAS MALFUNCTION

If ADAS control unit is malfunctioning

ADAS control unit