Infiniti QX56 (Z62). Manual - part 279

 

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Infiniti QX56 (Z62). Manual - part 279

 

 

DAS

C1A21 UNIT HIGH TEMP

DAS-153

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

C1A21 UNIT HIGH TEMP

DTC Logic

INFOID:0000000006228090

DTC DETECTION LOGIC

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn the ignition switch OFF.

2.

Wait for 10 minutes or more to cool the ICC sensor. 

3.

Start the engine.

4.

Turn the DCA system ON. 

5.

Perform “All DTC Reading” with CONSULT-III. 

6.

Check if the “C1A21” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “C1A21” detected as the current malfunction?

YES

>> Refer to 

DAS-153, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006228091

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “C1A21” is detected in “Self Diagnostic Result” of “LASER”. 

Is “C1A21” detected?

YES

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

CCS-111, "ICC SENSOR : DTC Logic"

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

DTC

(On board dis-

play)

Trouble diagnosis 

name

DTC detecting condition

Possible causes

C1A21

(21)

ICC SENSOR HIGH 
TEMP

ICC sensor judges high temperature abnormality

Temperature around the ICC sensor 
becomes high

DAS-154

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A24 NP RANGE

C1A24 NP RANGE

DTC Logic

INFOID:0000000006228092

DTC DETECTION LOGIC

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

DAS-182,

"ADAS CONTROL UNIT : DTC Logic"

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC REPRODUCE (1)

1.

Start the engine.

2.

Turn the DCA 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-154, "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-154, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000006228093

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-182, "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-155

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

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-156

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A26 ECD MODE MALFUNCTION

C1A26 ECD MODE MALFUNCTION

DTC Logic

INFOID:0000000006228094

DTC DETECTION LOGIC

NOTE:
If DTC “C1A26” is detected along with DTC “U1000”, “U0415” or “U0121” first diagnose the DTC “U1000”,
“U0415” or “U0121”.
• DTC “U1000”: Refer to 

DAS-182, "ADAS CONTROL UNIT : DTC Logic"

.

• DTC “U0415”: Refer to 

DAS-180, "DTC Logic"

.

• DTC “U0121”: Refer to 

DAS-175, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Wait for approximately 1 minute after turning the DCA system ON.

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “C1A26” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “C1A26” detected as the current malfunction?

YES

>> Refer to 

DAS-156, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000006228095

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000”, “U0415” or “U0121” is detected other than “C1A26” 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-100, "DTC Index"

.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

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 ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

.

DTC

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A26

(26)

ECD MODE MALF

If an abnormal condition occurs with ECD system

ABS actuator and electric unit (control 
unit)

 

 

 

 

 

 

 

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