Nissan Quest E52. Manual - part 1185

 

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Nissan Quest E52. Manual - part 1185

 

 

C160A HEAT PROTECTION

STC-29

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

C160A HEAT PROTECTION

DTC Logic

INFOID:0000000009650877

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform “EPS” self-diagnosis.

Is DTC “C160A” detected?

YES

>> Go to 

STC-17, "Work Flow"

.

NO

>> INSPECTION END

DTC

Display item

Malfunction detected condition

Possible cause

C160A

HEAT PROTECTION

When the steering wheel is operated excessively 
and the interior temperature of the power steering 
system reaches 118

°

C (244.4

°

F) or more. (Protec-

tion function)
NOTE:
Although the hydraulic pump electric power steering 
system warning lamp turns ON, this is not a system 
malfunction. The state returns to normal after stop-
ping steering operation and waiting until the system 
interior temperature drops to 90

°

C (194

°

F) or less.

The protection of the hydraulic 
pump electric power steering sys-
tem

STC-30

< DTC/CIRCUIT DIAGNOSIS >

U1000 CAN COMM CIRCUIT

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000009650878

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit communicate data but selectively reads required data only.

DTC Logic

INFOID:0000000009650879

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform “EPS” self-diagnosis.

Is DTC “U1000” detected?

YES

>> Go to 

STC-30, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009650880

Proceed to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

DTC

Display item

Malfunction detected condition

Possible cause

U1000

CAN COMM CIRCUIT

Power steering control module is not transmitting/re-
ceiving CAN communication signal for 2 seconds or 
more.

CAN communication error

HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP

STC-31

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP

Component Function Check

INFOID:0000000009650881

1.

CHECK THE ILLUMINATION OF THE HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING

LAMP

Check that the hydraulic pump electric power steering warning lamp turns ON when ignition switch turns ON.
Then, hydraulic pump electric power steering warning lamp turns OFF after the engine is started.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Perform trouble diagnosis. Refer to 

STC-31, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009650882

1.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform “EPS” self-diagnosis.

Is any DTC detected?

YES

>>  Check the DTC. Refer to 

STC-14, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP SIGNAL

With CONSULT

1.

Turn the ignition switch ON.

2.

Select in “WARNING LAMP” in “DATA MONITOR” in “EPS”.

3.

Check that the item in “DATA MONITOR” is “On”.

CAUTION:

Never start the engine.

4.

Start the engine.

CAUTION:

Never drive the vehicle.

5.

Check that the item in “DATA MONITOR” is “Off”.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for combination meter power supply circuit. Refer to 

MWI-72,

"COMBINATION METER : Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

CHECK TERMINALS AND HARNESS CONNECTORS

Check the power steering control module pin terminals for damage or loose connection with harness connec-
tor.

Is the inspection result normal?

YES

>> Power steering control module is malfunctioning. Replace power steering oil pump assembly.

Refer to 

ST-32, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

STC-32

< SYMPTOM DIAGNOSIS >

HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP DOES 

NOT TURN ON

SYMPTOM DIAGNOSIS

HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP
DOES NOT TURN ON

Description

INFOID:0000000009650883

The hydraulic pump electric power steering warning lamp does not illuminate when the ignition switch is
turned ON (lamp check).

Diagnosis Procedure

INFOID:0000000009650884

1.

CHECK THE HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP

Perform trouble diagnosis for the hydraulic pump electric power steering warning lamp system. Refer to 

STC-

31, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Check that the pin terminals and the connection of each connector are normal.

NO

>> Repair or replace error-detected parts.

 

 

 

 

 

 

 

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