Nissan Pathfinder (2005 year). Instruction — part 16
TROUBLE DIAGNOSIS
AT-99
D
E
F
G
H
I
J
K
L
M
A
B
AT
2005 Pathfinder
Judgement Self-diagnosis Code
If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.
Erase Self-diagnosis
●
In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is
stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned ON and OFF.
●
However, this information is erased by turning ignition switch OFF after executing self-diagnostics or by
erasing the memory using the CONSULT-II.
SCIA4758E
AT-100
DTC U1000 CAN COMMUNICATION LINE
2005 Pathfinder
DTC U1000 CAN COMMUNICATION LINE
PFP:23710
Description
UCS00329
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicle, and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission
with less wiring. Each control unit transmits/receives data but selectively reads required data only.
On Board Diagnosis Logic
UCS0032A
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “U1000 CAN COMM CIRCUIT” with CONSULT-II or 17th judgement flicker with-
out CONSULT-II is detected when TCM cannot communicate to other control units.
Possible Cause
UCS0032B
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation Procedure
UCS0032C
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3.
Start engine and wait for at least 6 seconds.
4.
If DTC is detected, go to
AT-102, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II”.
BCIA0030E
DTC U1000 CAN COMMUNICATION LINE
AT-101
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AT
2005 Pathfinder
Wiring Diagram — AT — CAN
UCS003PQ
BCWA0320E
AT-102
DTC U1000 CAN COMMUNICATION LINE
2005 Pathfinder
TCM terminal and Data are reference value.
Diagnostic Procedure
UCS0032D
1.
CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-II
1.
Turn ignition switch “ON” and start engine.
2.
Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II.
Is any malfunction of the “CAN COMM CIRCUIT” indicated?
YES
>> Print out CONSULT-II screen, GO TO LAN section.
Refer to
LAN-4, "Precautions When Using CONSULT-II"
.
NO
>> INSPECTION END
Terminal
No.
Wire
color
Item
Condition
Data (Approx.)
3
L
CAN H
–
–
8
P
CAN L
–
–
PCIA0061E
DTC P0615 START SIGNAL CIRCUIT
AT-103
D
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H
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B
AT
2005 Pathfinder
DTC P0615 START SIGNAL CIRCUIT
PFP:25230
Description
UCS0032E
●
TCM prohibits cranking other than at “P” or “N” position.
CONSULT-II Reference Value
UCS0032F
On Board Diagnosis Logic
UCS0032G
●
This is not an OBD-II self-diagnostic item.
●
Diagnostic trouble code “P0615 STARTER RELAY/CIRC” with CONSULT-II or 14th judgement flicker
without CONSULT-II is detected when park/neutral (PNP) relay (starter relay) is switched “ON” other than
at “P” or “N” position. (Or when switched “OFF” at “P” or “N” position).
Possible Cause
UCS0032H
●
Harness or connectors
[The park/neutral position (PNP) relay (starter relay) and TCM circuit is open or shorted.]
●
Park/neutral position (PNP) relay (starter relay)
DTC Confirmation Procedure
UCS0032I
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3.
Start engine.
4.
Drive vehicle for at least 2 consecutive seconds.
5.
If DTC is detected, go to
AT-105, "Diagnostic Procedure"
.
Item name
Condition
Display value
STARTER RELAY
Selector lever in “N”, “P” positions.
ON
Selector lever in other position.
OFF
BCIA0030E
AT-104
DTC P0615 START SIGNAL CIRCUIT
2005 Pathfinder
Wiring Diagram — AT — STSIG
UCS003PR
BCWA0385E
DTC P0615 START SIGNAL CIRCUIT
AT-105
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AT
2005 Pathfinder
TCM terminals and data are reference value. Measured between each terminal and ground.
Diagnostic Procedure
UCS003PS
1.
CHECK STARTER RELAY
With CONSULT-II
1.
Turn ignition switch ON. (Do not start engine.)
2.
Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II and check monitor “STARTER
RELAY” ON/OFF.
Without CONSULT-II
1.
Turn ignition switch ON. (Do not start engine.)
2.
Check voltage between the IPDM E/R connector and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 2.
2.
CHECK HARNESS BETWEEN A/T ASSEMBLY HARNESS CONNECTOR AND IPDM E/R CONNEC-
TOR
1.
Turn ignition switch OFF.
2.
Disconnect A/T assembly harness connector and IPDM E/R connector.
3.
Check continuity between A/T assembly harness connector and
IPDM E/R connector.
4.
If OK, check harness for short to ground and short to power.
5.
Reinstall any part removed.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
Terminal
Wire
color
Item
Condition
Data (Approx.)
9
R
Starter relay
Selector lever in “N”, “ P” positions.
Battery voltage
Selector lever in other positions.
0V
PCIA0056E
Item
Connector
Terminal
Shift position
Voltage
(Approx.)
Starter relay
E122
48
Ground
“N” and “P”
Battery voltage
“R” and “D”
0V
LCIA0320E
Item
Connector
Terminal
Continuity
A/T assembly harness
connector
F9
9
Yes
IPDM E/R connector
E122
48
SCIA6254E
AT-106
DTC P0615 START SIGNAL CIRCUIT
2005 Pathfinder
3.
CHECK TERMINAL CORD ASSEMBLY
1.
Remove control valve with TCM. Refer to
AT-233, "Control Valve With TCM and A/T Fluid Temperature
.
2.
Disconnect A/T assembly harness connector and TCM connector.
3.
Check continuity between A/T assembly harness connector ter-
minal and TCM connector terminal.
4.
If OK, check harness for short to ground and short to power.
5.
Reinstall any part removed.
OK or NG
OK
>> GO TO 4.
NG
>> Replace open circuit or short to ground and short to power in harness or connectors.
4.
DETECT MALFUNCTIONING ITEM
Check the following.
●
Starter relay, Refer to
.
●
IPDM E/R, Refer to
PG-17, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
.
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-233, "Control Valve With TCM and A/T Fluid
.
NG
>> Repair or replace damaged parts.
5.
CHECK DTC
Perform
AT-103, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
Item
Connector
Terminal
Continuity
A/T assembly harness
connector
F9
9
Yes
TCM connector
F502
8
SCIA5440E
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