Nissan X-Trail 32. Manual — part 1214
B20CF HEADLAMP (HI) RH POWER SUPPLY CIRCUIT
EXL-313
< DTC/CIRCUIT DIAGNOSIS >
[HALOGEN HEADLAMP]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Is the inspection result normal?
YES
>> Replace headlamp (HI) RH bulb. Refer to
.
NO
>> Repair or replace the headlamp (HI) RH harness.
Front combination lamp RH
Resistance
Terminal
6
5
Except 0
Ω
EXL-314
< DTC/CIRCUIT DIAGNOSIS >
[HALOGEN HEADLAMP]
B20D0 HEADLAMP (LO) LH POWER SUPPLY CIRCUIT
B20D0 HEADLAMP (LO) LH POWER SUPPLY CIRCUIT
DTC Description
INFOID:0000000010789839
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector
• Headlamp (LO) LH bulb
• Headlamp (LO) LH harness
• IPDM E/R
FAIL-SAFE
Shuts off the power supply to the headlamp (LO) LH power supply circuit until the headlamp (LO) ON condi-
tions are no longer satisfied.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
With CONSULT
1.
Turn ignition switch ON.
2.
Select “HL (LO) LH CIRC MALFUNCTN” in “Data Monitor” mode of “IPDM E/R” using CONSULT.
3.
Check the monitor status.
What is the monitor status?
“0”
>> GO TO 2.
“1”
>> A short circuit is detected multiple times in the headlamp (LO) LH power supply circuit, and dam-
age accumulates at the smart FET inside the IPDM E/R. For this reason, IPDM E/R does not turn
ON the smart FET. Because the DTC cannot be reproduced in this state, perform
and replace IPDM E/R after the malfunctioning part is repaired. Refer to
60, "Removal and Installation"
.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch OFF.
2.
Turn ignition switch ON.
3.
Turn lighting switch 2ND.
4.
Select “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT.
5.
Check DTC.
Is DTC detected?
YES
>> Refer to
EXL-314, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010789840
1.
CHECK HEADLAMP (LO) LH POWER SUPPLY CIRCUIT (SHORT)
1.
Turn ignition switch OFF.
2.
Turn lighting switch OFF.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
B20D0
HL (LO) LH PWR SPLY CIRC
[Headlamp (low) left hand power supply cir-
cuit]
[CIRC
SHORT TO
GRND]
When headlamp (LO) ON conditions are satisfied (smart
FET inside IPDM E/R is ON), and overcurrent is detected
in the headlamp (LO) LH power supply circuit.
Monitor item
Monitor status
HL (LO) LH CIRC MALFUNCTN
0
1
B20D0 HEADLAMP (LO) LH POWER SUPPLY CIRCUIT
EXL-315
< DTC/CIRCUIT DIAGNOSIS >
[HALOGEN HEADLAMP]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
3.
Disconnect IPDM E/R connector and front combination lamp LH connector.
4.
Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace harness.
2.
CHECK HEADLAMP (LO) LH POWER SUPPLY
With CONSULT
1.
Connect IPDM E/R connector.
2.
Turn ignition switch ON
3.
Select “HEADLAMP (LO)” in “Active Test” mode of “IPDM E/R” using CONSULT.
4.
With operating the test items, check the voltage between front combination lamp LH harness connector
and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace IPDM E/R. Refer to
PCS-60, "Removal and Installation"
.
3.
CHECK HEADLAMP (LO) LH
Check the headlamp (LO) LH bulb. Refer to
EXL-315, "Component Inspection"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace the malfunctioning part.
Component Inspection
INFOID:0000000010789841
1.
CHECK HEADLAMP (LO) LH
1.
Turn ignition switch OFF.
2.
Disconnect front combination lamp LH connector.
3.
Check resistance of front combination lamp LH terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK HEADLAMP (LO) LH
1.
Remove headlamp (HI) LH bulb.
2.
Check resistance of front combination lamp LH terminals.
IPDM E/R
—
Continuity
Connector
Terminal
E148
50
Ground
Not existed
+
-
Test item
Voltage
Front combination lamp LH
Connector
Terminal
E154
7
Ground
HEADLAMP
(LO)
On
9 – 16 V
Off
0 – 1 V
Front combination lamp LH
Resistance
Terminal
7
8
Except 0
Ω
EXL-316
< DTC/CIRCUIT DIAGNOSIS >
[HALOGEN HEADLAMP]
B20D0 HEADLAMP (LO) LH POWER SUPPLY CIRCUIT
Is the inspection result normal?
YES
>> Replace headlamp (LO) LH bulb. Refer to
NO
>> Repair or replace the headlamp (LO) LH harness.
Front combination lamp LH
Resistance
Terminal
7
8
Except 0
Ω
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