NISSAN X-TRAIL 2005 Service Repair Manual

DTC P0580, P0581 ASCD STEERING SWITCH
EC-1557
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DTC P0580, P0581 ASCD STEERING SWITCHPFP:25551
Component DescriptionEBS01FDT
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
Refer to EC-1690, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function.
CONSULT-II Reference Value in Data Monitor ModeEBS01FDU
Specification data are reference values.
1. ASCD steering switch 2. RESUME/ACCELERATE switch 3. CANCEL switch
4. SET/COAST switch 5. MAIN switch
PBIB2877E
MONITOR ITEM CONDITION SPECIFICATION
MAIN SW

Ignition switch: ONMAIN switch: Released OFF
MAIN switch: Pressed ON
CANCEL SW

Ignition switch: ONCANCEL switch: Released OFF
CANCEL switch: Pressed ON
RESUME/ACC SW

Ignition switch: ONRESUME/ACCELERATE switch:
ReleasedOFF
RESUME/ACCELERATE switch:
PressedON
SET SW

Ignition switch: ONSET/COAST switch: Released OFF
SET/COAST switch: Pressed ON

EC-1558
[YD (WITHOUT EURO-OBD)]
DTC P0580, P0581 ASCD STEERING SWITCH

On Board Diagnosis LogicEBS01FDV
MI will not light up for these diagnoses.
NOTE:
If DTC P0580 or P0581 is displayed with DTC P0606, first perform the trouble diagnosis for DTC P0606.
Refer to EC-1566, "
DTC P0605 ECM".
DTC Confirmation ProcedureEBS01FDW
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 10 seconds.
4. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
5. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.
6. Press SET COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.
7. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
8. If DTC is detected, go to EC-1562, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 10 seconds.
2. Press CRUISE switch for at least 10 seconds, then release it and wait at least 10 seconds.
3. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.
4. Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.
5. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
6. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
7. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
8. If DTC is detected, go to EC-1562, "
Diagnostic Procedure" .
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P0580
0580ASCD steering
switch circuit low
input

ECM detects that the ASCD steering switch is
stuck ON.
Harness or connectors
(The switch circuit is open or shorted.)

ASCD steering switch

ECM P0581
0581ASCD steering
switch circuit high
input
An excessively high voltage signal from the ASCD
steering switch is sent to ECM.

DTC P0580, P0581 ASCD STEERING SWITCH
EC-1559
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Wiring DiagramEBS01FDX
LHD MODELS
TBWB0475E

EC-1560
[YD (WITHOUT EURO-OBD)]
DTC P0580, P0581 ASCD STEERING SWITCH

RHD MODELS
TBWB0476E

DTC P0580, P0581 ASCD STEERING SWITCH
EC-1561
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
*1: LHD models
*2: RHD modelsTERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
102PU*
1
W/R*2ASCD steering switch[Ignition switch ON]

ASCD steering switch: OFFApproximately 4.3V
[Ignition switch ON]

MAIN switch: PressedApproximately 0.3V
[Ignition switch ON]

CANCEL switch: PressedApproximately 1.3V
[Ignition switch ON]

RESUME/ACCELERATE switch: PressedApproximately 3.3V
[Ignition switch ON]

SET/COAST switch: PressedApproximately 2.3V
103 B/ORASCD steering switch
ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V

EC-1562
[YD (WITHOUT EURO-OBD)]
DTC P0580, P0581 ASCD STEERING SWITCH

Diagnostic ProcedureEBS01FDZ
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1424, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
PBIB2020E

DTC P0580, P0581 ASCD STEERING SWITCH
EC-1563
[YD (WITHOUT EURO-OBD)]
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2. CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON.
2. Select “MAIN SW”, “RESUME/ACC SW”, “SET SW” and “CANCEL SW” in “DATA MONITOR” mode with
CONSULT-II.
3. Check each item indication under the following conditions.
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 102 and ground under the
following conditions.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
3. CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ASCD steering switch (1) harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between ASCD steering switch termi-
nal 2 and ECM terminal 103. Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
Switch Monitor item Condition Indication
MAIN MAIN SWPressed ON
Released OFF
CANCEL CANCEL SWPressed ON
Released OFF
RESUME/ACCEL-
ERATERESUME/ACC SWPressed ON
Released OFF
SET/COAST SET SWPressed ON
Released OFF
SEC006D
Switch Condition Voltage (V)
MAINPressed Approx. 0.3
Released Approx. 4.3
CANCELPressed Approx. 1.3
Released Approx. 4.3
RESUME/ACCELER-
AT EPressed Approx. 3.3
Released Approx. 4.3
SET/COASTPressed Approx. 2.3
Released Approx. 4.3
MBIB0043E
Continuity should exist.
PBIB2879E

EC-1564
[YD (WITHOUT EURO-OBD)]
DTC P0580, P0581 ASCD STEERING SWITCH

4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M206, M202

Combination switch (spiral cable)

Harness for open and short between ECM and ASCD steering switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 102 and ASCD steering switch terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M206, M202

Combination switch (spiral cable)

Harness for open and short between ECM and ASCD steering switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK ASCD STEERING SWITCH
Refer to EC-1564, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace ASCD steering switch.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-1414, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS01FE0
ASCD STEERING SWITCH
1. Disconnect ASCD steering switch.
2. Check continuity between ASCD steering switch terminals 1 and
2 with pushing each switch.Continuity should exist.
Switch Condition Resistance (Ω)
MAINPressed Approx. 0
Released Approx. 4,000
CANCELPressed Approx. 250
Released Approx. 4,000
RESUME/ACCELERATEPressed Approx. 1,480
Released Approx. 4,000
PBIB2880E

DTC P0580, P0581 ASCD STEERING SWITCH
EC-1565
[YD (WITHOUT EURO-OBD)]
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SET/COASTPressed Approx. 660
Released Approx. 4,000 Switch Condition Resistance (Ω)

EC-1566
[YD (WITHOUT EURO-OBD)]
DTC P0605 ECM

DTC P0605 ECMPFP:23710
DescriptionEBS01224
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis LogicEBS01225
DTC Confirmation ProcedureEBS01226
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-1567, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go to EC-1567, "
Diagnostic Procedure" .
MBIB0625E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0605
0605Engine control module
(ROM)ECM ROM is malfunctioning.

ECM
SEF817Y