Nissan Xterra. Instruction — part 649
DIAGNOSIS SYSTEM (TCM)
TM-109
< SYSTEM DESCRIPTION >
[5AT: RE5R05A]
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When the ignition switch is switched “ON”, the O/D OFF indicator lamp lights up for 2 seconds. As a method
for locating the suspect circuit, when the self-diagnostics start signal is input, the memory for the malfunction
location is output and the O/D OFF indicator lamp flashes to display the corresponding DTC.
Diagnostic Procedure
1.
CHECK O/D OFF INDICATOR LAMP
1. Start the engine with selector lever in “P” position. Warm engine to normal operating temperature.
2. Turn ignition switch ON and OFF at least twice, then leave it in the OFF position.
3. Wait 10 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does O/D OFF indicator lamp come on for about 2 seconds?
YES
>> GO TO 2.
NO
>> Go to
2.
JUDGMENT PROCEDURE STEP 1
1. Turn ignition switch OFF.
2. Keep pressing shift lock release button.
3. Move selector lever from “P” to “D” position.
4. Release accelerator pedal. (Set the closed throttle position signal “ON”.)
5. Depress brake pedal. (Stop lamp switch signal “ON”.)
6. Turn ignition switch ON. (Do not start engine.)
7. Wait 3 seconds.
8. Move the selector lever from “D” to “3” position.
9. Release brake pedal. (Stop lamp switch signal “OFF”.)
10. Move the selector lever from “3” to “2” position.
11. Depress brake pedal. (Stop lamp switch signal “ON”.)
12. Release brake pedal. (Stop lamp switch signal “OFF”.)
13. Depress accelerator pedal fully and release it.
>> GO TO 3.
3.
CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp.
Refer to "Judgment Self-diagnosis Code".
If the system does not go into self-diagnostics. Refer to
,
>> DIAGNOSIS END
Judgment Self-diagnosis Code
TM-110
< SYSTEM DESCRIPTION >
[5AT: RE5R05A]
DIAGNOSIS SYSTEM (TCM)
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.
JSDIA1433GB
No.
Malfunctioning item
No.
Malfunctioning item
1
Output speed sensor
12
Interlock
2
13
1st engine braking
3
Torque converter
14
Starter relay
4
15
TP sensor
5
Input clutch solenoid
16
Engine speed
6
Front brake solenoid
17
7
Low coast brake solenoid
18
1GR incorrect ratio
8
High and low reverse clutch solenoid
19
2GR incorrect ratio
9
20
3GR incorrect ratio
10
Transmission fluid temperature sensor
21
4GR incorrect ratio
11
Input speed sensor
22
5GR incorrect ratio
U0100 LOST COMMUNICATION (ECM A)
TM-111
< DTC/CIRCUIT DIAGNOSIS >
[5AT: RE5R05A]
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DTC/CIRCUIT DIAGNOSIS
U0100 LOST COMMUNICATION (ECM A)
Description
INFOID:0000000009485410
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
INFOID:0000000009485411
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “U0100” with CONSULT is detected when TCM is unable to receive the CAN com-
munications signal from ECM.
Possible Cause
INFOID:0000000009485412
• ECM
• Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation Procedure
INFOID:0000000009485413
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
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to
WITH GST
Follow the procedure “WITH CONSULT”.
Diagnosis Procedure
INFOID:0000000009485414
1.
CHECK CAN COMMUNICATION CIRCUIT
With CONSULT
1. Turn ignition switch “ON” and start engine.
2. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT.
Is “U0100” detected?
YES
>> Go to LAN section. Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
NO
>> INSPECTION END
TM-112
< DTC/CIRCUIT DIAGNOSIS >
[5AT: RE5R05A]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000009485415
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
INFOID:0000000009485416
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “U1000” with CONSULT or 17th judgment flicker without CONSULT is detected
when TCM cannot communicate to other control units.
Possible Cause
INFOID:0000000009485417
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation Procedure
INFOID:0000000009485418
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
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to
.
WITH GST
Follow the procedure “WITH CONSULT”.
Diagnosis Procedure
INFOID:0000000009485419
1.
CHECK CAN COMMUNICATION CIRCUIT
With CONSULT
1. Turn ignition switch “ON” and start engine.
2. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT.
Is any malfunction of the “U1000” indicated?
YES
>> Go to LAN section. Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
NO
>> INSPECTION END
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