Infiniti M45 (Y34). Manual - part 478

DTC P1706 PNP SWITCH

EC-601

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D

E

F

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L

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EC

Overall Function Check

ABS002S1

Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this
check, a 1st trip DTC might not be confirmed.

 WITH GST

1.

Turn ignition switch ON.

2.

Check voltage between ECM terminal 80 (PNP switch signal)
and ground under the following conditions.

3.

If NG, go to 

EC-603, "Diagnostic Procedure"

 .

Position (Selector lever)

Voltage V (Known good data)

P or N position

Approx. 0

Except above position

BATTERY VOLTAGE

(11 - 14V)

PBIB0169E

EC-602

DTC P1706 PNP SWITCH

Wiring Diagram

ABS002S2

TBWA0302E

DTC P1706 PNP SWITCH

EC-603

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F

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EC

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

ABS002S3

1. 

INSPECTION START

Do you have CONSULT-II?

Yes or No

Yes

>> GO TO 2.

No

>> GO TO 3.

2. 

CHECK PNP SWITCH SIGNAL

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Select “A/T”, then “DATA MONITOR” mode with CONSULT-II.

3.

Select “P/N POSI SW” signal and check its indication under the
following conditions.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

3. 

CHECK PNP SWITCH

 Without CONSULT-II

Confirm that the PNP switch signal is sent to TCM correctly.
Refer to 

AT-110, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"

 .

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4. 

CHECK PNP SWITCH CIRCUIT

Check the PNP switch circuit.
Refer to 

AT-110, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"

 .

>> INSPECTION END

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

80

GY/R

PNP switch

[Ignition switch: ON]

●

Selector lever: P or N.

Approximately 0V

[Ignition switch: ON]

●

Except above position

Approximately 5V

Position (Selector lever)

P/N POSI SW

P or N position

ON

Other position

OFF

PBIB0102E

EC-604

DTC P1706 PNP SWITCH

5. 

CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I

1.

Turn ignition switch OFF.

2.

Disconnect TCM harness connector.

3.

Disconnect fuse block (J/B) No. 1 harness connector.

4.

Check harness continuity between TCM terminal 48 and fuse
block (J/B) No.1 terminal 17D.
 Refer to Wiring Diagram.

5.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors F105, M135

●

Harness for open or short between TCM and fuse block (J/B) No. 1

>> Repair open circuit or short to ground or short to power in harness or connectors.

7. 

CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II

1.

Check harness continuity between fuse block (J/B) No. 1 terminal 1E and ground.
 Refer to Wiring Diagram.

2.

Also check harness for short to power.

OK or NG

OK

>> GO TO 8.

NG

>> Repair open circuit or short to power in harness or connectors.

8. 

CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-III

1.

Disconnect ECM harness connector.

2.

Check harness continuity between ECM terminal 80 and fuse block (J/B) No. 1 terminal 19D.
 Refer to Wiring Diagram.

3.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 9.

9. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors F105, M135

●

Harness for open or short between ECM and fuse block (J/B) No. 1

>> Repair open circuit or short to ground or short to power in harness or connectors.

Continuity should exist.

PBIB0028E

Continuity should exist.

Continuity should exist.