Nissan Frontier. Instruction — part 1238

DIAGNOSIS SYSTEM (TCM)

TM-163

< 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

TM-242, "Symptom Chart"

.

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

TM-170, "Diagnosis Procedure"

,

TM-220, "Diagnosis

Procedure"

,

TM-221, "Diagnosis Procedure"

.

>> DIAGNOSIS END

Judgment Self-diagnosis Code

TM-164

< 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

TM-174

12

Interlock

TM-202

2

Direct clutch solenoid

TM-210

13

1st engine braking

TM-204

3

Torque converter

TM-189

,

TM-191

14

Starter relay

TM-167

4

Line pressure solenoid

TM-193

15

TP sensor

TM-195

5

Input clutch solenoid

TM-206

16

Engine speed

TM-177

6

Front brake solenoid

TM-208

17

CAN communication line

TM-166

7

Low coast brake solenoid

TM-214

,

TM-216

18

1GR incorrect ratio

TM-179

8

High and low reverse clutch solenoid

TM-212

19

2GR incorrect ratio

TM-181

9

Transmission range switch

TM-170

20

3GR incorrect ratio

TM-183

10

Transmission fluid temperature sensor

TM-197

21

4GR incorrect ratio

TM-185

11

Input speed sensor

TM-172

22

5GR incorrect ratio

TM-187

U0100 LOST COMMUNICATION (ECM A)

TM-165

< DTC/CIRCUIT DIAGNOSIS >

[5AT: RE5R05A]

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DTC/CIRCUIT DIAGNOSIS

U0100 LOST COMMUNICATION (ECM A)

Description

INFOID:0000000009480485

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:0000000009480486

• 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:0000000009480487

• ECM

• Harness or connectors

(CAN communication line is open or shorted.)

DTC Confirmation Procedure

INFOID:0000000009480488

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

TM-165, "Diagnosis Procedure"

.

WITH GST

Follow the procedure “WITH CONSULT”.

Diagnosis Procedure

INFOID:0000000009480489

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-166

< DTC/CIRCUIT DIAGNOSIS >

[5AT: RE5R05A]

U1000 CAN COMM CIRCUIT

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000009480490

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:0000000009480491

• 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:0000000009480492

Harness or connectors

(CAN communication line is open or shorted.)

DTC Confirmation Procedure

INFOID:0000000009480493

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

TM-166, "Diagnosis Procedure"

.

WITH GST

Follow the procedure “WITH CONSULT”.

Diagnosis Procedure

INFOID:0000000009480494

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