Nissan Tiida C11. Manual - part 631

EC-1174

< COMPONENT DIAGNOSIS >

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P0575 ASCD STEERING SWITCH

P0575 ASCD STEERING SWITCH

Description

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ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.

DTC Logic

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DTC DETECTION LOGIC

NOTE:
• Special note:

 If the DTC is present, the cruise control/speed limiter function will be inhibited.

Diagnosis Procedure

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1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

 Check ground connection E15. Refer to Ground inspection in 

GI-58, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ASCD SWITCH CIRCUIT

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 3.

3.

CHECK ASCD SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ASCD switch harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between ASCD switch harness connector and ground.

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

DTC No.

Trouble diagnosis name

Possible cause

P0575

CRUISE CONTROL/SPEED LIMITER FUNCTION
• 1.DEF: Values outside the levels 
• CC.1: Short circuit to +12V
• 2.DEF: Signal outside upper level

• Harness or connectors

(ASCD steering switch circuit is open or shorted)

• ASCD steering switch
• Combination switch

+

–

Condition

Voltage

Connector

Terminal

Connector

Terminal

E16

98

(ASCD switch signal)

E16

128

ASCD switch: ON

Battery voltage

ASCD switch: OFF

0V

ASCD switch

Ground

Voltage

Connector

Terminal

M81

6

Ground

Battery voltage

P0575 ASCD STEERING SWITCH

EC-1175

< COMPONENT DIAGNOSIS >

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Check the following.
• 10A fuse (No.2)
• Harness for open or short between ASCD switch and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK ASCD SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ASCD switch harness connector and ECM harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors M69, E7
• Harness for open or short between ECM and ASCD switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

7.

CHECK ASCD SWITCH

Refer to 

EC-1176, "Component Inspection (ASCD Switch)"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Replace ASCD switch.

8.

CHECK ASCD STEERING SWITCH CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect combination switch harness connector.

3.

Disconnect ECM harness connector.

4.

Check the continuity between combination switch harness connector and ECM harness connector.

5.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 9.

9.

DETECT MALFUNCTIONING PART

• Harness connectors M69, E7
• Combination switch (spiral cable)
• Harness for open or short between ECM and combination switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

10.

CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between combination switch harness connector and ECM harness connector.

ASCD switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

M81

5

E16

98

Existed

Combination switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

M31

15

E16

111

Existed

EC-1176

< COMPONENT DIAGNOSIS >

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P0575 ASCD STEERING SWITCH

2.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> GO TO 11.

11.

DETECT MALFUNCTIONING PART

• Harness connectors M69, E7
• Combination switch (spiral cable)
• Harness for open or short between ECM and combination switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

12.

CHECK ASCD STEERING SWITCH 

Refer to 

EC-1176, "Component Inspection (ASCD Steering Switch)"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Replace ASCD steering switch.

13.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (ASCD Switch)

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1.

CHECK ASCD SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect ASCD switch harness connector.

3.

Check the continuity between ASCD switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD switch.

Component Inspection (ASCD Steering Switch)

INFOID:0000000001162645

1.

CHECK ASCD STEERING SWITCH

1.

Disconnect combination switch (spiral cable) harness connector M31.

2.

Check the continuity between combination switch harness connector terminals under following conditions.

Combination switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

M31

14

E16

110

Existed

Terminals

Condition

Continuity

5 and 6

ASCD switch ON

Existed

ASCD switch OFF

Not existed

Combination meter

Condition

Resistance

Connector

Terminals

M31

14 and 15

(Combination switch)

CANCEL switch

Approx. 0 

Ω

SET – switch

Approx. 100 

Ω

SET + switch

Approx. 274 

Ω

RESUME switch

Approx. 910 

Ω

P0575 ASCD STEERING SWITCH

EC-1177

< COMPONENT DIAGNOSIS >

[K9K]

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Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD steering switch.