Nissan Frontier D40. Manual — part 406
P1554 BATTERY CURRENT SENSOR
EC-315
< COMPONENT DIAGNOSIS >
[QR25DE]
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EC
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2.
Check voltage between ECM terminal 71 (battery current sensor
signal) and ground for 10 seconds.
The voltage should be above 2.3V at least once.
3.
If NG, go to
Diagnosis Procedure
INFOID:0000000005273342
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten two ground screws on the body.
Refer to
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect battery current sensor harness connector.
2.
Turn ignition switch ON.
3.
Check voltage between battery current sensor terminal 1 and
ground with CONSULT-III or tester.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
PBIA9891J
BBIA0614E
BBIA0630E
Voltage: Approximately 5V
PBIB2609E
EC-316
< COMPONENT DIAGNOSIS >
[QR25DE]
P1554 BATTERY CURRENT SENSOR
Check the following.
• Harness connectors E5, F14
• Harness for open or short between battery current sensor and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between battery current sensor terminal 2 and ECM terminal 67.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E5, F14
• Harness for open or short between battery current sensor and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
6.
CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between battery current sensor terminal 3 and ECM terminal 71.
Refer to Wiring Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E5, F14
• Harness for open or short between battery current sensor and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
8.
CHECK BATTERY CURRENT SENSOR
EC-316, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace battery negative cable assembly.
9.
CHECK INTERMITTENT INCIDENT
GI-46, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000005273343
BATTERY CURRENT SENSOR
Continuity should exist.
Continuity should exist.
P1554 BATTERY CURRENT SENSOR
EC-317
< COMPONENT DIAGNOSIS >
[QR25DE]
C
D
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F
G
H
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J
K
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M
A
EC
N
P
O
1.
Reconnect harness connectors disconnected.
2.
Disconnect battery negative cable.
3.
Install jumper cable between battery negative terminal and body
ground.
4.
Turn ignition switch ON.
5.
Check voltage between ECM terminal 71 (battery current sensor
signal) and ground.
6.
If NG, replace battery negative cable assembly.
BBIA0631E
Voltage: Approximately 2.5V
PBIB2617E
EC-318
< COMPONENT DIAGNOSIS >
[QR25DE]
P1564 ASCD STEERING SWITCH
P1564 ASCD STEERING SWITCH
Component Description
INFOID:0000000005273344
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
On Board Diagnosis Logic
INFOID:0000000005273345
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this self-diagnosis.
NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to
.
DTC Confirmation Procedure
INFOID:0000000005273346
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-III
1.
Turn ignition switch ON and wait at least 10 seconds.
2.
Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
3.
Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
4.
Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.
5.
Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.
6.
Check DTC.
7.
If DTC is detected, go to
.
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnosis Procedure
INFOID:0000000005273347
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten two ground screws on the body.
PBIB2645E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1564
1564
ASCD steering switch
• An excessively high voltage signal from the
ASCD steering switch is sent to ECM.
• ECM detects that input signal from the ASCD
steering switch is out of the specified range.
• ECM detects that the ASCD steering switch is
stuck ON.
• Harness or connectors
(The switch circuit is open or shorted.)
• ASCD steering switch
• ECM
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