Nissan Pathfinder. Manual — part 900
PCS-76
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
B26F6 BCM
B26F6 BCM
DTC Logic
INFOID:0000000009175242
DTC DETECTION LOGIC
NOTE:
• If DTC B26F6 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B26F6 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM SELF DIAGNOSTIC RESULT
1. Turn ignition switch ON under the following conditions, and wait for 2 seconds or more.
-
CVT selector lever is in the P (park) or N (neutral) position.
-
Do not depress brake pedal.
2. Perform self diagnostic result.
Is DTC B26F6 detected?
YES
>> Go to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009175243
Regarding Wiring Diagram information, refer to
.
1.
CHECK SELF DIAGNOSTIC RESULT FOR IPDM E/R
Perform self diagnostic result for IPDM E/R.
Are any DTCs detected?
YES
>> Refer to
NO
>> GO TO 2
2.
CHECK IGNITION RELAY-1 POWER SUPPLY (IPDM E/R)
Check voltage between IPDM E/R connector E119 and ground.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-32, "Removal and Installation"
NO
>> GO TO 3.
3.
CHECK IGNITION RELAY-1 POWER SUPPLY (BCM)
Check voltage between BCM connector M19 and ground.
CONSULT Display
DTC Detection Condition
Possible Cause
BCM
[B26F6]
Ignition relay ON signal is not transmitted from IPDM
E/R (CAN) when BCM turns ignition relay ON.
BCM
IPDM E/R
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
E119
43
—
Ignition: OFF
0V
Ignition: ON
Battery voltage
BCM
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
PCS
B26F6 BCM
PCS-77
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Is the inspection result normal?
YES
>> Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace BCM. Refer to
BCS-80, "Removal and Installation"
M19
70
—
Ignition: OFF
0V
Ignition: ON
Battery voltage
PCS-78
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
PUSH-BUTTON IGNITION SWITCH
PUSH-BUTTON IGNITION SWITCH
Component Function Check
INFOID:0000000009175244
1.
CHECK FUNCTION
1. Select “PUSH SW” in “Data Monitor” of BCM with CONSULT.
2. Check the push-button ignition switch signal under the following conditions.
Is the indication normal?
YES
>> Inspection End.
NO
>> Go to
.
Diagnosis Procedure
INFOID:0000000009175245
Regarding Wiring Diagram information, refer to
.
1.
CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL (PUSH-BUTTON IGNITION SWITCH)
1. Turn ignition switch OFF.
2. Disconnect push-button ignition switch connector and IPDM E/R connector E119.
3. Check voltage between push-button ignition switch connector M17 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)
1. Disconnect BCM connector M18.
2. Check continuity between BCM connector M18 and push-button ignition switch connector M17.
3. Check continuity between BCM connector M18 and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-80, "Removal and Installation"
NO
>> Repair or replace harness or connectors.
3.
CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)
Check voltage between IPDM E/R connector E119 and ground.
Test item
Condition
Status
PUSH SW
Push-button ignition switch is pressed
On
Push-button ignition switch is not pressed
Off
Push-button ignition switch
Ground
Voltage
(Approx.)
Connector
Terminal
M17
8
—
Battery voltage
BCM
Push-button ignition switch
Continuity
Connector
Terminal
Connector
Terminal
M18
1
M17
8
Yes
BCM
Ground
Continuity
Connector
Terminal
M18
1
—
No
PCS
PUSH-BUTTON IGNITION SWITCH
PCS-79
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)
1. Disconnect BCM connector M18.
2. Check continuity between IPDM E/R connector E119 and push-button ignition switch connector M17.
3. Check continuity between IPDM E/R connector E119 and ground.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-32, "Removal and Installation"
.
NO
>> Repair or replace harness or connectors.
5.
CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT
Check continuity between push-button ignition switch connector M17 and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness or connectors.
6.
CHECK PUSH-BUTTON IGNITION SWITCH
PCS-79, "Component Inspection"
.
Is the inspection result normal?
YES
>> Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace push-button ignition switch.
Component Inspection
INFOID:0000000009175246
1.
CHECK PUSH-BUTTON IGNITION SWITCH
1. Turn ignition switch OFF.
2. Disconnect push-button ignition switch connector.
3. Check continuity between push-button ignition switch terminals.
Is the inspection result normal?
YES
>> Inspection End.
IPDM E/R
Ground
Voltage
(Approx.)
Connector
Terminal
E119
38
—
Battery voltage
IPDM E/R
Push-button ignition switch
Continuity
Connector
Terminal
Connector
Terminal
E119
38
M17
8
Yes
IPDM E/R
Ground
Continuity
Connector
Terminal
E119
38
—
No
Push-button ignition switch
Ground
Continuity
Connector
Terminal
M17
4
—
Yes
Push-button ignition switch terminals
Condition
Continuity
4 – 8
Pressed
Yes
Not pressed
No
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