2008 NISSAN TEANA engine coolant

ON BOARD DIAGNOSTIC (OBD) SYSTEM
TM-35
< FUNCTION DIAGNOSIS >[CVT: RE0F09B]
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
Diagnosis DescriptionINFOID:0000000003848943
DESCRIPTION
The CVT system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (OBD) performed by the TCM in combination with
the ECM. A malfunction is indicated by the MI (Malfunction Indicator) and is stored as a DTC in the ECM mem-
ory and in the TCM memory.
The second is the TCM original self-diagnosis performed by the TCM. A malfunction history is stored in the
TCM memory. The detected items are overlapped with OBD self-diagnostic items. For details, refer to TM-121,
"DTC Index".
OBD FUNCTION
The ECM provides emission-related on board diagnostic (OBD) functions for the CVT system. One function is
to receive a signal from the TCM used with OBD-related parts of the CVT system. The signal is sent to the
ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a
diagnostic result by means of the MI (Malfunction Indicator) on the instrument panel. Sensors, switches and
solenoid valves are used as sensing elements.
The MI automatically illuminates in “One or Two Trip Detection Logic” when a malfunction is sensed in relation
to CVT system parts.
ONE OR TWO TRIP DETECTION LOGIC OF OBD
One Trip Detection Logic
If a malfunction is sensed during the first test drive, the MI illuminates and the ECM memory stores the mal-
function as a DTC. The TCM is not provided with such a memory function.
Two Trip Detection Logic
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MI does not illuminate. — 1st trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MI will illuminate. — 2nd trip
The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
OBD DIAGNOSTIC TROUBLE CODE (DTC)
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
( with CONSULT-III or GST) CONSULT-III or GST (Generic Scan Tool) Examples: P0705, P0720, etc.
These DTC are prescribed by ISO 15031-6.
(CONSULT-III also displays the malfunctioning component or system.)
1st trip DTC No. is the same as DTC No.
Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring or
it occurred in the past and has returned to normal.
CONSULT-III can identify them as shown below, therefore, CONSULT-III (if available) is recom-
mended.
- DTC or 1st trip DTC of a malfunction is displayed in “Self-Diagnostic Results” mode for “ENGINE” with CON-
SULT-III. Time data indicates how many times the vehicle was driven after the last detection of a DTC.
- If the DTC is being detected currently, the time data will be “0”.
- If a 1st trip DTC is stored in the ECM, the time data will be “1t”.
Freeze Frame Data and 1st Trip Freeze Frame Data The ECM has a memory function, which stores the driving conditions such as fuel system status, calculated
load value, engine coolant temperature, short-term fuel trim, long-term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data that are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-
III or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST.
For details, refer to EC-113, "
CONSULT-III Function".

FLUID COOLER SYSTEM
TM-167
< ON-VEHICLE REPAIR >[CVT: RE0F09B]
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InspectionINFOID:0000000003849107
After completing installation, check for engine coolant leakage and check engine coolant level. Refer to CO-8,
"Inspection".

TM-168
< REMOVAL AND INSTALLATION >[CVT: RE0F09B]
TRANSAXLE ASSEMBLY
REMOVAL AND INSTALLATION
TRANSAXLE ASSEMBLY
Exploded ViewINFOID:0000000003849108
Removal and InstallationINFOID:0000000003849109
WARNING:
Never remove the reservoir tank cap when the engine is hot. Serious burns could occur from high
pressure engine coolant escaping from the reservoir tank.
REMOVAL
1. Remove the engine, the transaxle assembly and front suspension member. Refer to EM-67, "Exploded
View".
2. Lift with hoist and separate engine, transaxle assembly from front suspension member. Refer to EM-67,
"Exploded View".
1. CVT fluid level gauge 2. CVT fluid charging pipe 3. O-ring
4. Transaxle assembly
A. For tightening torque, refer to TM-168, "
Removal and Installation".
Refer to GI-4, "
Components" for symbols in the figure.
JPDIA0799GB

TM-202
< FUNCTION DIAGNOSIS >[CVT: RE0F10A]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Diagnosis DescriptionINFOID:0000000003806373
DESCRIPTION
The CVT system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (OBD) performed by the TCM in combination with
the ECM. A malfunction is indicated by the MI (Malfunction Indicator) and is stored as a DTC in the ECM mem-
ory and in the TCM memory.
The second is the TCM original self-diagnosis performed by the TCM. A malfunction history is stored in the
TCM memory. The detected items are overlapped with OBD self-diagnostic items. For details, refer to TM-204,
"CONSULT-III Function (TRANSMISSION)".
OBD FUNCTION
The ECM provides emission-related on board diagnostic (OBD) functions for the CVT system. One function is
to receive a signal from the TCM used with OBD-related parts of the CVT system. The signal is sent to the
ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a
diagnostic result by means of the MI (Malfunction Indicator) on the instrument panel. Sensors, switches and
solenoid valves are used as sensing elements.
The MI automatically illuminates in “One or Two Trip Detection Logic” when a malfunction is sensed in relation
to CVT system parts.
ONE OR TWO TRIP DETECTION LOGIC OF OBD
One Trip Detection Logic
If a malfunction is sensed during the first test drive, the MI illuminates and the ECM memory stores the mal-
function as a DTC. The TCM is not provided with such a memory function.
Two Trip Detection Logic
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MI does not illuminate. — 1st trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MI will illuminate. — 2nd trip
The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
OBD DIAGNOSTIC TROUBLE CODE (DTC)
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
( with CONSULT-III or GST) CONSULT-III or GST (Generic Scan Tool) Examples: P0705, P0720, etc.
These DTC are prescribed by ISO 15031-6.
(CONSULT-III also displays the malfunctioning component or system.)
1st trip DTC No. is the same as DTC No.
Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring or
it occurred in the past and has returned to normal.
CONSULT-III can identify them as shown below, therefore, CONSULT-III (if available) is recom-
mended.
- DTC or 1st trip DTC of a malfunction is displayed in SELF-DIAGNOSTIC RESULTS mode for “ENGINE” with
CONSULT-III. Time data indicates how many times the vehicle was driven after the last detection of a DTC.
- If the DTC is being detected currently, the time data will be “0”.
- If a 1st trip DTC is stored in the ECM, the time data will be “1t”.
Freeze Frame Data and 1st Trip Freeze Frame Data The ECM has a memory function, which stores the driving conditions such as fuel system status, calculated
load value, engine coolant temperature, short-term fuel trim, long-term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data that are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-
III or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST.
For details, refer to EC-113, "
CONSULT-III Function".

TM-332
< REMOVAL AND INSTALLATION >[CVT: RE0F10A]
TRANSAXLE ASSEMBLY
REMOVAL AND INSTALLATION
TRANSAXLE ASSEMBLY
Exploded ViewINFOID:0000000003806551
Removal and InstallationINFOID:0000000003806552
WARNING:
Never remove the reservoir tank cap when the engine is hot. Serious burns could occur from high
pressure engine coolant escaping from the reservoir tank.
REMOVAL
1. Remove the engine, the transaxle assembly and front suspension member. Refer to EM-67, "Exploded
View".
2. Lift with hoist and separate engine, transaxle assembly from front suspension member. Refer to EM-67,
"Exploded View".
3. Remove air breather hose. Refer to TM-328, "
Exploded View".
4. Remove CVT fluid level gauge and CVT fluid charging pipe.
5. Disconnect the following connectors:
 Primary speed sensor connector
 Secondary speed sensor connector
 PNP switch connector
 CVT unit connector
6. Remove crankshaft position sensor (POS). Refer to EM-38, "
Exploded View".
1. Transaxle assembly 2. O-ring 3. CVT fluid charging pipe
4. CVT fluid level gauge
A. For tightening torque, refer to TM-332, "
Removal and Installation".
B. To water outlet
Refer to GI-4, "
Components" for symbols in the figure.
JPDIA0736GB

HEATER & COOLING UNIT ASSEMBLY
VTL-37
< ON-VEHICLE REPAIR >[WITHOUT 7 INCH DISPLAY]
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Removal and InstallationINFOID:0000000003774678
REMOVAL
1. Collect the refrigerant with refrigerant collecting equipment (for HFC134a).
2. Drain engine coolant from cooling system. Refer to CO-8, "
Draining".
3. Remove mounting bolt (A), and then disconnect low-pressure
pipe (1) and high-pressure pipe (2) from the expansion valve.
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve
with suitable material such as vinyl tape to avoid the entry
of air.
4. Remove air cleaner case and air duct. Refer to EM-26, "
Exploded View"
5. Remove clamps (A), and then disconnect heater hoses (1).
CAUTION:
 Some coolant may spill when heater hoses are discon-
nected. Wipe them off with wastes.
 Close the coolant inlet/outlet on the heater core and
heater hoses with wastes.
6. Remove instrument panel assembly. Refer to IP-11, "
Exploded View".
7. Remove mounting nuts (A), and then remove instrument stay
(1).
49. Defroster door 50. Air mix door (Slide door)
Refer to GI-4, "
Components" for symbols in the figure.
JPIIA0915ZZ
JPIIA0916ZZ
JPIIA0909ZZ

HEATER & COOLING UNIT ASSEMBLY
VTL-39
< ON-VEHICLE REPAIR >[WITHOUT 7 INCH DISPLAY]
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16. Remove floor duct 1 (left and right) (1) and rear ventilator duct 1
(2), and then remove heater & cooling unit assembly (3).
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
 Replace O-rings with new ones. Then apply compressor oil to them when installing.
 Check for leakages when recharging refrigerant.
NOTE:
 Refer to CO-9, "
Refilling" when filling radiator with engine coolant.
 Charge the refrigerant.
JPIIA0921ZZ

VTL-44
< ON-VEHICLE REPAIR >[WITHOUT 7 INCH DISPLAY]
HEATER CORE
Removal and Installation
INFOID:0000000003774686
REMOVAL
1. Remove heater & cooling unit assembly. Refer to VTL-35, "Exploded View".
2. Remove mounting screws (A), and then remove foot duct (left)
(1).
3. Remove heater pipe grommet (1).
4. Remove mounting screw (A), and then remove heater pipe sup-
port (2).
5. Remove mounting screws (B), and then remove heater pipe
cover (3).
6. Slide heater core (1) to leftward (as shown in the figure).
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
 Replace O-rings with new ones. Then apply compressor oil to them when installing.
 Check for refrigerant leakage when charging refrigerant.
NOTE:
 Refer to CO-9, "
Refilling" when filling radiator with engine coolant.
 Charge the refrigerant.
37. Defroster door link 38. Foot door link 39. Max. cool door lever
40. Foot door lever 41. Defroster door lever 42. Adapter case
43. Distributor lower case 44. Ventilator door 45. Intake sensor
46. Intake sensor bracket 47. Foot door 48. Max. cool door
49. Defroster door 50. Air mix door (Slide door)
Refer to GI-4, "
Components" for symbols in the figure.
JPIIA0925ZZ
JPIIA0926ZZ
JPIIA0927ZZ