Nissan March K13. Instruction — part 250
P1805 BRAKE SWITCH
EC-461
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
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P1805 BRAKE SWITCH
DTC Logic
INFOID:0000000006037381
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Fully depress the brake pedal for at least 5 seconds.
3.
Erase DTC.
4.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006037382
1.
CHECK STOP LAMP SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Check the stop lamp when depressing and releasing the brake pedal.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check the voltage between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check 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.
4.
CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Disconnect stop lamp switch harness connector.
2.
Disconnect ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1805
Brake switch
A brake switch signal is not sent to ECM
for extremely long time while the vehicle is
driving.
• Harness or connectors
(Stop lamp switch circuit is open or shorted.)
• Stop lamp switch
Brake pedal
Stop lamp
Fully released
Not illuminated
Slightly depressed
Illuminated
Stop lamp switch
Ground
Voltage
Connector
Terminal
E114
1
Ground
Battery voltage
EC-462
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
P1805 BRAKE SWITCH
3.
Check the continuity between ECM harness connector and stop lamp switch harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to
EC-462, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace brake pedal assembly. Refer to
6.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
XX-XX, "*****"
.
>> Repair or replace malfunctioning part.
Component Inspection
INFOID:0000000006037383
1.
CHECK STOP LAMP SWITCH-I
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check the continuity between stop lamp switch terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK STOP LAMP SWITCH-II
1.
Adjust stop lamp switch installation. Refer to
XX-XX, "*****"
.
2.
Check the continuity between stop lamp switch terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace brake pedal assembly. Refer to
ECM
Stop lamp switch
Continuity
Connector
Terminal
Connector
Terminal
E18
99
E114
2
Existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released
Not existed
Slightly depressed
Existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released
Not existed
Slightly depressed
Existed
P2122, P2123 APP SENSOR
EC-463
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
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P2122, P2123 APP SENSOR
DTC Logic
INFOID:0000000006037385
DTC DETECTION LOGIC
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to
.
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006037386
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E38. Refer to Ground Inspection in
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1.
Disconnect accelerator pedal position (APP) sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2122
Accelerator pedal position
sensor 1 circuit low input
An excessively low voltage from the APP
sensor 1 is sent to ECM.
• Harness or connectors
(APP sensor 1 circuit is open or shorted.)
• Accelerator pedal position sensor
(APP sensor 1)
P2123
Accelerator pedal position
sensor 1 circuit high input
An excessively high voltage from the APP
sensor 1 is sent to ECM.
APP sensor
Ground
Voltage
Connector
Terminal
M206
4
Ground
Approx. 5 V
EC-464
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
P2122, P2123 APP SENSOR
3.
Check the continuity between APP sensor 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 4.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between APP sensor harness connector and ECM harness connector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK APP SENSOR
EC-464, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace accelerator pedal assembly. Refer to
6.
CHECK INTERMITTENT INCIDENT
Refer to
XX-XX, "*****"
.
>> INSPECTION END
Component Inspection
INFOID:0000000006037387
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1.
Reconnect all harness connectors disconnected.
2.
Turn ignition switch ON.
3.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accelerator pedal assembly. Refer to
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
M206
2
E16
111
Existed
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
M206
3
E16
110
Existed
ECM
Condition
Voltage
Connector
+
−
Terminal
Terminal
E16
110
(APP sensor 1 signal)
111
Accelerator
pedal
Fully released
0.6 - 0.9 V
Fully depressed
3.9 - 4.7 V
103
(APP sensor 2 signal)
104
Fully released
0.3 - 0.6 V
Fully depressed
1.95 - 2.4 V
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