Nissan Frontier D40. Instruction — part 253
P1813 4WD SHIFT SWITCH
DLN-33
< COMPONENT DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
3.
Operate 4WD shift switch and check continuity between 4WD
shift switch terminals.
Are the inspection results normal?
YES
>> GO TO 5.
NO
>> Replace 4WD shift switch.
5.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 6.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
6.
CHECK DTC
Drive the vehicle and then perform self-diagnosis.
Is DTC P1813 displayed?
YES
>> Replace transfer control unit. Refer to
DLN-94, "Removal and Installation"
.
NO
>> Inspection End.
Component Inspection
INFOID:0000000005275433
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Remove 4WD shift switch harness connector.
3.
Operate 4WD shift switch and check continuity between 4WD
shift switch terminals.
4.
If the inspection results are abnormal replace the 4WD shift switch.
Terminal
Condition
Continuity
1 - 3
4WD shift switch: 2WD
Yes
4WD shift switch: 4H and 4LO
No
1 - 5
4WD shift switch: 4H
Yes
4WD shift switch: 2WD and 4LO
No
1 - 6
4WD shift switch: 4LO
Yes
4WD shift switch: 2WD and 4H
No
SDIA2805E
Terminal
Condition
Continuity
1 - 3
4WD shift switch: 2WD
Yes
4WD shift switch: 4H and 4LO
No
1 - 5
4WD shift switch: 4H
Yes
4WD shift switch: 2WD and 4LO
No
1 - 6
4WD shift switch: 4LO
Yes
4WD shift switch: 2WD and 4H
No
SDIA2805E
DLN-34
< COMPONENT DIAGNOSIS >
[TRANSFER: TX15B]
P1814 WAIT DETECTION SWITCH
P1814 WAIT DETECTION SWITCH
Description
INFOID:0000000005275434
The wait detection switch detects if the transfer case is in 4WD. DTC P1814 will set if an improper signal from
the wait detection switch is input due to open or short circuit.
DTC Logic
INFOID:0000000005275435
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Perform self-diagnosis.
Is DTC P1814 detected?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005275436
Regarding Wiring Diagram information, refer to
.
1.
CHECK WAIT DETECTION SWITCH SIGNAL
With CONSULT-III
1.
Start engine.
2.
Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-III.
3.
Read out the value of “WAIT DETCT SW”.
Without CONSULT-III
1.
Start engine.
2.
Check voltage between transfer control unit harness connector
terminal and ground.
Are the inspection results normal?
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1814]
4WD DETECT SWITCH
Improper signal from wait detection
switch is input due to open or short cir-
cuit.
Condition
Display value
• Vehicle stopped
• Engine running
• A/T selector lever “N” position
• Brake pedal depressed
4WD shift switch: 4H and 4LO
ON
4WD shift switch: 2WD
OFF
Connector
Terminal
Condition
Voltage
(Approx.)
M152
17 -
Ground
• Vehicle stopped
• Engine running
• A/T selector lever
“N” position
• Brake pedal de-
pressed
4WD shift switch
: 4H and 4LO
0V
4WD shift switch: 2WD
Battery
voltage
SDIA3367E
P1814 WAIT DETECTION SWITCH
DLN-35
< COMPONENT DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND WAIT DETECTION SWITCH
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect transfer control unit harness connector and the wait detection switch harness connector.
3.
Check continuity between transfer control unit harness connec-
tor M152 terminal 17 and wait detection switch harness connec-
tor F59 terminal 10.
Also check harness for short to ground and short to power.
Is there continuity?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect wait detection switch harness connector.
3.
Check continuity between wait detection switch harness con-
nector F59 terminal 11 and ground.
Also check harness for short to power.
Is there continuity?
YES >> GO TO 4.
NO
>> Repair open circuit or short to power in harness or con-
nectors.
4.
CHECK WAIT DETECTION SWITCH
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect wait detection switch harness connector.
3.
Remove wait detection switch. Refer to
DLN-13, "Component Parts Location"
.
4.
Push and release wait detection switch and check continuity
between wait detection switch terminals 10 and 11.
Are the inspection results normal?
YES
>> GO TO 5.
NO
>> Replace wait detection switch.
5.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 6.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
6.
CHECK DTC
Drive the vehicle and then perform self-diagnosis.
Is DTC P1814 displayed?
Continuity should exist.
SDIA3368E
Continuity should exist.
PDIA0207E
Terminal
Condition
Continuity
10 - 11
Push wait detection switch
Yes
Release wait detection switch
No
PDIA0208E
DLN-36
< COMPONENT DIAGNOSIS >
[TRANSFER: TX15B]
P1814 WAIT DETECTION SWITCH
YES
>> Replace transfer control unit. Refer to
DLN-94, "Removal and Installation"
.
NO
>> Inspection End.
Component Inspection
INFOID:0000000005275437
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect wait detection switch harness connector.
3.
Remove wait detection switch. Refer to
DLN-13, "Component Parts Location"
4.
Push and release wait detection switch and check continuity
between wait detection switch terminals 10 and 11.
5.
If the inspection results are abnormal replace the wait detection
switch.
Terminal
Condition
Continuity
10 - 11
Push wait detection switch
Yes
Release wait detection switch
No
PDIA0208E
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