Infiniti QX56 (Z62). Manual — part 284

DAS

C1F06 CAN CIRCUIT2

DAS-173

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

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C1F06 CAN CIRCUIT2

DTC Logic

INFOID:0000000006223598

DTC DETECTION LOGIC

NOTE:
If DTC “C1F06” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to

DAS-182,

"ACCELERATOR PEDAL ACTUATOR : DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the DCA system ON.

3.

Perform “All DTC Reading” with CONSULT-III.

4.

Check if the “C1F06” is detected as the current malfunction in “Self Diagnostic Result” of “ACCELE
PEDAL ACT”.

Is “C1F06” detected as the current malfunction?

YES

>> Refer to

DAS-173, "Diagnosis Procedure"

.

NO

>> Refer to

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006223599

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1F06” in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.

Is “U1000” detected?

YES

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

Refer to

DAS-182, "ACCELERATOR PEDAL ACTUATOR : DTC Logic"

.

NO

>> GO TO 2.

2.

REPLACE ADAS CONTROL UNIT

1.

Turn the ignition switch OFF.

2.

Replace the ADAS control unit. Refer to

DAS-63, "Removal and Installation"

.

3.

Erases All self-diagnosis results.

4.

Perform “All DTC Reading” again.

5.

Check if the “C1F06” is detected in self-diagnosis results of “ACCELE PEDAL ACT”.

Is “C1F06” detected?

YES

>> Replace the accelerator pedal assembly. Refer to

DAS-213, "Exploded View"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

C1F06

CAN CIR 2

If accelerator pedal actuator detects an error
signal that is received from ADAS control unit
via ITS communication

ADAS control unit

DAS-174

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1F07 CAN CIRCUIT1

C1F07 CAN CIRCUIT1

DTC Logic

INFOID:0000000006223600

DTC DETECTION LOGIC

NOTE:
If DTC “C1F07” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to

DAS-182,

"ADAS CONTROL UNIT : DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the DCA system ON.

3.

Perform “All DTC Reading” with CONSULT-III.

4.

Check if the “C1F07” is detected as the current malfunction in “Self Diagnostic Result” of “ACCELE
PEDAL ACT”.

Is “C1F07” detected as the current malfunction?

YES

>> Refer to

DAS-173, "Diagnosis Procedure"

.

NO

>> Refer to

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006223601

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1F07” in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.

Is “U1000” detected?

YES

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

Refer to

DAS-182, "ACCELERATOR PEDAL ACTUATOR : DTC Logic"

.

NO

>> GO TO 2.

2.

REPLACE ADAS CONTROL UNIT

1.

Turn the ignition switch OFF.

2.

Replace the ADAS control unit. Refer to

DAS-63, "Removal and Installation"

.

3.

Erases All self-diagnosis results.

4.

Perform “All DTC Reading” again.

5.

Check if the “C1F07” is detected in self-diagnosis results of “ACCELE PEDAL ACT”.

Is “C1F07” detected?

YES

>> Replace the accelerator pedal assembly. Refer to

DAS-213, "Exploded View"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

C1F07

CAN CIR 1

If accelerator pedal actuator detects an error
signal that is received from ADAS control unit
via ITS communication

ADAS control unit

DAS

U0121 VDC CAN 2

DAS-175

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

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U0121 VDC CAN 2

DTC Logic

INFOID:0000000006228131

DTC DETECTION LOGIC

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

DAS-182,

"ADAS CONTROL UNIT : DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the DCA system ON.

3.

Perform “All DTC Reading” with CONSULT-III.

4.

Check if the “U0121” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.

Is “U0121” detected as the current malfunction?

YES

>> Refer to

DAS-175, "Diagnosis Procedure"

.

NO

>> Refer to

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006228132

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0121” 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 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

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"

.

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

U0121

(127)

VDC CAN CIR2

If ADAS control unit detects an error signal
that is received from ABS actuator and electric
unit (control unit) via CAN communication

ABS actuator and electric unit (control
unit)

DAS-176

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

U0126 STRG SEN CAN 1

U0126 STRG SEN CAN 1

DTC Logic

INFOID:0000000006228133

DTC DETECTION LOGIC

NOTE:
If DTC “U0126” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to

DAS-182,

"ADAS CONTROL UNIT : DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the DCA system ON.

3.

Perform “All DTC Reading” with CONSULT-III.

4.

Check if the “U0126” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.

Is “U0126” detected as the current malfunction?

YES

>> Refer to

DAS-176, "Diagnosis Procedure"

.

NO

>> Refer to

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006228134

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0126” 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 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

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"

.

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

U0126

(130)

STRG SEN CAN CIR1

If ADAS control unit detects an error signal
that is received from steering angle sensor via
CAN communication

Steering angle sensor