Automatic Drive Positioner: Other Infiniti I35 II

OPERATIVE CONDITION

The drive position can be set in 2 ways, manually and automatically.

Output Failure

When the ignition switch is in the ON position, if any of the parts (indicated in the following chart) move more than the specified amount within a period "T2" when no "ON" input is sent from any of the switches (indicated in the following chart), or an output from the automatic drive positioner is not produced, an output failure is sensed. Motor operation will be suspended automatically, and all automatic operations will be ineffective. (In this case, the motor will not operate manually.)

Scheme 2

Absolving

When moving selector lever back to "P" position after having moved it to any position except "P", fail-safe operation will be canceled.

INITIALIZATION

After reconnecting battery cable, perform initialization procedure A or B. If initialization has not been performed, automatic drive positioner will not operate.

PROCEDURE A

1. Insert key in the ignition key cylinder. (Ignition switch is in "OFF" position.)
2. Open --> close --> open driver side door. (Do not perform with the door switch operation.)
3. End

PROCEDURE B

1. Drive the vehicle at more than 25 km/h (16 MPH).
2. End

MEMORY AUTOMATIC SET

Two drive positions can be retained in the memory. Press memory switch to set driver's seat to preset position.

Scheme 3

Note. When memory switch for which driver's seat positions are already retained in memory is pressed, new seat positions will be retained in memory in place of the previously set positions. Drive position is erased from the memory when battery cable is disconnected more than 30 seconds. After connecting battery cable, perform initialization procedures.

Scheme 4

Note. Do not keep cancel switch pressed as it will not operate. Automatic exiting setting will be performed. The driver's seat position (see the following chart) operates in the order of priority.

AUTOMATIC EXITING SETTING

"Exiting" positions: Driver's seat ... Slides about 40 mm (1.57 in) rear from normal sitting position.

Scheme 5

AUTOMATIC SET RETURN

With driver's seat set to the "exiting" position, operating one of the following procedures moves it to the position previously retained in memory.

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MALFUNCTION CODE TABLE

In this mode, a malfunction code is indicated by the number of flashes from the automatic drive positioner indicator lamps (indicator lamp 1, indicator lamp 2) as shown below.

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*1: After reconnecting battery cable, perform initialization procedure A or B.

If initialization has not been performed, automatic drive positioner will not operate.

PROCEDURE A

1. Insert key in the ignition key cylinder. (Ignition switch is in "OFF" position.)
2. Open --> close --> open driver side door. (Do not perform with the door switch operation.)
3. End

PROCEDURE B

1. Drive the vehicle at more than 25 km/h (16 MPH).
2. End

After performing preliminary check, go to symptom chart below.

Before starting trouble diagnoses below, perform preliminary check, PRELIMINARY CHECK . Symptom numbers in the symptom chart correspond with those of preliminary check.

Scheme 19

Scheme 20

Power Supply Circuit Check

Check voltage between seat control unit LH terminal 1 and ground. (Refer to Wiring Diagram - AUT/DP .)

Scheme 21

If NG, check the following.

Scheme 22

1. Circuit breaker
2. Harness for open or short between circuit breaker and seat control unit LH

Ground Circuit Check

Check continuity between seat control unit LH terminal 33 and ground.

(Refer to Wiring Diagram - AUT/DP .)

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Scheme 28

1. CHECK SLIDING ENCODER OUTPUT SIGNAL Measure voltage between seat control unit LH terminal 18 and ground with CONSULT-II or oscilloscope when power seat slide is operated. OK or NG OK : Sliding encoder is OK. NG : GO TO 2.
2. CHECK SLIDING ENCODER INPUT SIGNAL Check voltage between seat control unit LH terminal 17 and ground. OK or NG OK : GO TO 3. NG : Replace seat control unit LH.
3. CHECK SLIDING ENCODER OPEN CIRCUIT Disconnect seat control unit LH connector and sliding device LH connector. Check harness continuity between seat control unit LH connector and sliding device LH connector. OK or NG OK : GO TO 4. NG : Repair harness.
4. CHECK SLIDING ENCODER SHORT CIRCUIT Check harness continuity between seat control unit LH connector and ground. OK or NG OK : Replace sliding encoder. NG : Repair harness.

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Scheme 32

1. CHECK RECLINING ENCODER OUTPUT SIGNAL Measure voltage between seat control unit LH terminal 29 and ground with CONSULT-II or oscilloscope when power seat reclining is operated. OK or NG OK : Reclining encoder is OK. NG : GO TO 2.
2. CHECK RECLINING ENCODER INPUT SIGNAL Check voltage between seat control unit LH terminal 17 and ground. OK or NG OK : GO TO 3. NG : Replace seat control unit LH.
3. CHECK RECLINING ENCODER OPEN CIRCUIT Disconnect seat control unit LH connector and reclining device LH connector. Check harness continuity between seat control unit LH connector and reclining LH connector. OK or NG OK : GO TO 4. NG : Repair harness.
4. CHECK RECLINING ENCODER SHORT CIRCUIT Check harness continuity between seat control unit LH connector and ground. OK or NG OK : Replace reclining encoder. NG : Repair harness.

Scheme 33

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1. CHECK LIFTING ENCODER (FRONT) OUTPUT SIGNAL Measure voltage between seat control unit LH terminal 19 and ground with CONSULT-II or oscilloscope when power seat lifting (front) is operated. OK or NG OK : Lifting encoder (front) is OK. NG : GO TO 2.
2. CHECK LIFTING ENCODER (FRONT) INPUT SIGNAL Check voltage between seat control unit LH terminal 17 and ground. OK or NG OK : GO TO 3. NG : Replace seat control unit LH.
3. CHECK LIFTING ENCODER (FRONT) OPEN CIRCUIT Disconnect seat control unit LH connector and front lifting device LH connector. Check harness continuity between seat control unit LH connector and front lifting device LH connector. OK or NG OK : GO TO 4. NG : Repair harness.
4. CHECK LIFTING ENCODER (FRONT) SHORT CIRCUIT Check harness continuity between seat control unit LH connector and ground. OK or NG OK : Replace lifting encoder (front). NG : Repair harness.

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Scheme 40

1. CHECK LIFTING ENCODER (REAR) OUTPUT SIGNAL Measure voltage between seat control unit LH terminal 30 and ground with CONSULT-II or oscilloscope when power seat lifting (rear) is operated. OK or NG OK : Lifting encoder (rear) is OK. NG : GO TO 2.
2. CHECK LIFTING ENCODER (REAR) INPUT SIGNAL Check voltage between seat control unit LH terminal 17 and ground. OK or NG OK : GO TO 3. NG : Replace seat control unit LH.
3. CHECK LIFTING ENCODER (REAR) OPEN CIRCUIT Disconnect seat control unit LH connector and rear lifting device LH connector. Check harness continuity between seat control unit LH connector and rear lifting device LH connector. OK or NG OK : GO TO 4. NG : Repair harness.
4. CHECK LIFTING ENCODER (REAR) SHORT CIRCUIT Check harness continuity between seat control unit LH connector and ground. OK or NG OK : Replace lifting encoder (rear). NG : Repair harness.

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1. CHECK OUTPUT SIGNAL TO SLIDING MOTOR Check voltage between seat control unit LH terminals 3 or 10 and ground. OK or NG OK : GO TO 2. NG : Replace seat control unit LH.
2. CHECK SLIDING MOTOR Disconnect sliding device LH connector. Apply 12V DC direct current to motor and check operation. OK or NG OK : Check harness for operation between seat control unit LH and sliding motor. NG : Replace sliding motor.

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1. CHECK OUTPUT SIGNAL TO RECLINING MOTOR Check voltage between seat control unit LH terminals 4 or 12 and ground. OK or NG OK : GO TO 2. NG : Replace seat control unit LH.
2. CHECK RECLINING MOTOR Disconnect reclining device LH connector. Apply 12V DC direct current to motor and check operation. OK or NG OK : Check harness for operation between seat control unit LH and reclining motor. NG : Replace reclining motor.

Scheme 45

Scheme 46

1. CHECK OUTPUT SIGNAL TO LIFTING MOTOR (FRONT) Check voltage between seat control unit LH terminals 5 or 13 and ground. OK or NG OK : GO TO 2. NG : Replace seat control unit LH.
2. CHECK LIFTING MOTOR (FRONT) Disconnect front lifting device LH connector. Apply 12V DC direct current to motor and check operation. OK or NG OK : Check harness for operation between seat control unit LH and lifting motor (front). NG : Replace lifting motor (front).

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1. CHECK OUTPUT SIGNAL TO LIFTING MOTOR (REAR) Check voltage between seat control unit LH terminals 6 or 7 and ground. OK or NG OK : GO TO 2. NG : Replace seat control unit LH.
2. CHECK LIFTING MOTOR (REAR) Disconnect rear lifting device LH connector. Apply 12V DC direct current to motor and check operation. OK or NG OK : Check harness for operation between seat control unit LH and lifting motor (rear). NG : Replace lifting motor (rear).

Scheme 49

1. CHECK POWER SEAT SWITCH Disconnect power seat switch LH connector. Check continuity between power seat switch terminals (B515). OK or NG OK : Check the following. Ground circuit for power seat switch Harness for open or short between seat control unit LH and power seat switch NG : Replace power seat switch.

Scheme 50

1. CHECK CANCEL SWITCH Disconnect cancel switch connector. Check continuity between cancel switch terminals. OK or NG OK : Check the following. Ground circuit for cancel switch Harness for open or short between seat control unit LH and cancel switch NG : Replace cancel switch.

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1. CHECK KEY SWITCH INPUT SIGNAL Check voltage between seat control unit LH terminal 2 and ground. OK or NG OK : GO TO 2. NG : Check the following. 10A fuse [No. 12, located in fuse block (J/B)] Key switch Harness for open or short between key switch and fuse Harness for open or short between seat control unit LH and key switch
2. CHECK IGNITION SWITCH INPUT SIGNAL (ON AND START) Check voltage between seat control unit LH terminals and ground. OK or NG OK : GO TO 3. NG : Check the following. 10A fuse [No. 10, located in fuse block (J/B)] 10A fuse [No. 21, located in fuse block (J/B)] Harness for open or short between seat control unit LH and fuse
3. CHECK PARK POSITION SWITCH INPUT SIGNAL Check voltage between seat control unit LH terminal 21 and ground. OK or NG OK : GO TO 4. NG : Check the following. Park position switch Park position switch ground circuit Harness for open or short between seat control unit LH and park position switch
4. CHECK DRIVER DOOR SWITCH INPUT SIGNAL Check voltage between seat control unit LH terminal 9 and ground. OK or NG OK : GO TO 5. NG : Check the following. Driver door switch Driver door switch ground circuit Harness for open or short between seat control unit LH and driver door switch
5. CHECK VEHICLE SPEED SENSOR Does speedometer operate normally? Yes or No OK : GO TO 6. NG : Check speedometer and vehicle speed sensor circuit. Refer to «VEHICLE SPEED SENSOR»(ref-154089-S26318343762003050200000) .
6. CHECK VEHICLE SPEED SENSOR PULL UP VOLTAGE Turn ignition switch "ON". Check voltage between seat control unit LH terminal 32 and ground. OK or NG OK : Harness for open or short between seat control unit LH and combination meter. NG : Repair harness.

Scheme 56

1. CHECK SEAT MEMORY SWITCH Disconnect seat memory switch connector. Check continuity between seat memory switch terminals. OK or NG OK : Check the following. Ground circuit for seat memory switch Harness for open or short between seat control unit LH and seat memory switch NG : Replace seat memory switch.

Scheme 57

1. CHECK INDICATOR LAMP Check indicator lamp illumination. OK or NG OK : GO TO 2. NG : Replace seat memory switch (indicator lamp).
2. CHECK POWER SUPPLY CIRCUIT FOR INDICATOR LAMP Disconnect seat memory switch connector. Check voltage between seat memory switch terminal 5 and ground. OK or NG OK : Check harness for open or short between seat control unit LH and seat memory switch NG : Check the following. 10A fuse [No. 12 located in the fuse block (J/B)] Harness for open or short between fuse and indicator lamp