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![NISSAN LATIO 2009 Service Repair Manual ASCD BRAKE SWITCH
EC-1501
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
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G H
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M A EC
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• Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to groun NISSAN LATIO 2009 Service Repair Manual ASCD BRAKE SWITCH
EC-1501
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
NP
O
• Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to groun](/manual-img/5/57359/w960_57359-2856.png)
ASCD BRAKE SWITCH
EC-1501
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
NP
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• Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors. 13.
CHECK STOP LAMP SWITCH INPUT SI GNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 99 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 14.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 14.
CHECK STOP LAMP SWITCH
Refer to EC-1436, " Component Inspection " .
OK or NG OK >> GO TO 15.
NG >> Replace stop lamp switch. 15.
CHECK INTERMITTENT INCIDENT
Refer to EC-1138 .
>> INSPECTION END
Component Inspection INFOID:0000000004500402
ASCD BRAKE SWITCH 1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check continuity between ASCD brake switch terminals 1 and 2 under the following conditions.
If NG, adjust ASCD brake switch installation, refer to BR-6 , and
perform step 3 again.
ASCD CLUTCH SWITCH 1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector. Continuity should exist.
Condition Continuity
Brake pedal: Fully released. Should exist.
Brake pedal: Slightly depressed. Should not exist. SEC023D
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EC-1502< SERVICE INFOMATION >
[MR TYPE 2]
ASCD BRAKE SWITCH
3. Check continuity between ASCD clutch switch terminals 1 and 2 under the following conditions.
If NG, adjust ASCD clutch switch installation, refer to CL-5 , and
perform step 3 again.
STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check continuity between stop lamp switch terminals 1 and 2 under the following conditions.
If NG, adjust stop lamp switch installation, refer to BR-6 , and perform step 3 again.
Condition Continuity
Clutch pedal: Fully released. Should exist.
Clutch pedal: Slightly depressed. Should not exist. SEC023D
Condition Continuity
Brake pedal: Fully released. Should not exist.
Brake pedal: Slightly depressed. Should exist. PBIB3318E
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ASCD INDICATOR
Component Description INFOID:0000000004500403
ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter.
CRUISE indicator illuminates when MAIN switch on ASCD st eering switch is turned ON to indicate that ASCD
system is ready for operation.
SET indicator illuminates when following conditions are met.
• CRUISE indicator is illuminated.
• SET/COAST switch on ASCD steering switch is tur ned ON while vehicle speed is within the range of ASCD
setting.
SET indicator remains lit during ASCD control.
Refer to EC-1033 for the ASCD function.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004500404
Specification data are reference value.
MONITOR ITEM CONDITION SPECIFICATION
CRUISE LAMP • Ignition switch: ON MAIN switch: Pressed at 1st time
→ 2nd ON
→ OFF
SET LAMP • MAIN switch: ON
• Vehicle: Between 40 km/h (25 MPH) and 144 km/h (89 MPH) ASCD: Operating ON
ASCD: Not operating OFF
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OK or NG OK >>
INSPECTION END
NG >> GO TO 2. Yes >> Perform trouble diagnoses for DTC UXXXX.
No >> GO TO 3. Yes >> GO TO 4.
No >> Check combination meter circuit. Refer to DI-3 .
.
>> INSPECTION END
ASCD INDICATOR CONDITION SPECIFICATION
CRUISE LAMP • Ignition switch: ON MAIN switch: Pressed at 1st
time → 2nd ON
→ OFF
SET LAMP • MAIN switch: ON
• Vehicle: Between 40 km/h (25
MPH) and 144 km/h (89
MPH) ASCD: Operating ON
ASCD: Not operating OFF
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OK >> GO TO 2.
NG >> GO TO 4. OK >> GO TO 3.
NG >> GO TO 5. OK >>
INSPECTION END .
NG >> GO TO 6. or
LT-25 .
>> INSPECTION END Condition LOAD SIGNAL
Lighting switch: ON at 2nd position ON
Lighting switch: OFF OFF Condition LOAD SIGNAL
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF Condition LOAD SIGNAL
Heater fan control switch: ON ON
Heater fan control switch: OFF OFF
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Refer to
GW-51 .
>> INSPECTION END .
>> INSPECTION END
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EC-1508< SERVICE INFOMATION >
[MR TYPE 2]
FUEL INJECTOR
FUEL INJECTOR
Component Description INFOID:0000000004500409
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
CONSULT-III Reference Value in Data Monitor Mode INFOID:0000000004500410
Specification data are reference values. PBIA9664J
MONITOR ITEM CONDITION SPECIFICATION
B/FUEL SCHDL See EC-1130 .
INJ PULSE-B1 • Engine: After warming up
• Air conditioner switch: OFF
• Shift lever: P or N (A/T, CVT),
Neutral (M/T)
• No load Idle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec