Nissan Frontier. Instruction — part 453
P1554 BATTERY CURRENT SENSOR
EC-383
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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 42.
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-383, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace battery negative cable assembly.
9.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000009481077
BATTERY CURRENT SENSOR
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 42 (battery current sensor
signal) and ground.
6. If NG, replace battery negative cable assembly.
Continuity should exist.
Voltage: Approximately 2.5V
BBIA0631E
EC-384
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
P1564 ASCD STEERING SWITCH
P1564 ASCD STEERING SWITCH
Component Description
INFOID:0000000009481078
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:0000000009481079
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:0000000009481080
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
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” above.
Diagnosis Procedure
INFOID:0000000009481081
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
P1564 ASCD STEERING SWITCH
EC-385
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT
1. Turn ignition switch ON.
2. Select “MAIN SW”, “RESUME/ACC SW”, “SET SW and “CANCEL SW” in “DATA MONITOR” mode with
CONSULT.
3. Check each item indication under the following conditions.
Without CONSULT
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 85 and ground with pressing each button.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 3.
3.
CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect combination switch harness connector M102.
3. Disconnect ECM harness connector.
BBIA0614E
Switch
Monitor item
Condition
Indication
MAIN switch
MAIN SW
Pressed
ON
Released
OFF
CANCEL switch
CANCEL SW
Pressed
ON
Released
OFF
RESUME/ACCELERATE
switch
RESUME/ACC SW
Pressed
ON
Released
OFF
SET/COAST switch
SET SW
Pressed
ON
Released
OFF
Switch
Condition
Voltage [V]
MAIN switch
Pressed
Approx. 0
Released
Approx. 4.0
CANCEL switch
Pressed
Approx. 1.0
Released
Approx. 4.0
RESUME/ACCELERATE
switch
Pressed
Approx. 3.0
Released
Approx. 4.0
SET/COAST switch
Pressed
Approx. 2.0
Released
Approx. 4.0
EC-386
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
P1564 ASCD STEERING SWITCH
4. Check harness continuity between combination switch terminal 17 and ECM terminal 92.
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.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors M31, E152
• Combination switch (spiral cable)
• Harness for open and short between ECM and combination switch
>> Repair open circuit, 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 85 and combination switch terminal 14.
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.
• Combination switch (spiral cable)
• Harness for open and short between ECM and combination switch
• Harness connectors M31, E152
>> Repair open circuit, short to ground or short to power in harness or connectors.
7.
CHECK ASCD STEERING SWITCH
EC-386, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace ASCD steering switch. Refer to
ST-11, "Removal and Installation"
.
8.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000009481082
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable) harness connector M102.
2. Check continuity between ASCD steering switch terminals 14 and 17 with pushing each switch.
Continuity should exist.
Continuity should exist.
Switch
Condition
Resistance [
Ω]
MAIN switch
Pressed
Approx. 0
Released
Approx. 4,000
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