Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Infiniti M35 BaseFACTORY OEM SERVICE PROCEDURE
Terminals and Reference Value for Intelligent Key Unit
TERMINALS AND REFERENCE VALUE CHART
| Terminal No. | Wire color | Item | Signal Input/Output | Condition | Voltage (V) (Approx.) | |
|---|---|---|---|---|---|---|
| Push-button ignition switch position | Operation or conditions | |||||
| 1 | SB | Power source (fuse) | Input | - | - | Battery voltage |
| 3 | Y | IPDM E/R status signal | Input | START | Engine starting (During cranking) | 5 |
| LOCK | Other than above | 2 | ||||
| 4 | B/Y | RSSI signal | Input/Output | LOCK | Carry the Intelligent Key within the inside key antenna detection area, and then push the push-button ignition switch. | 0 |
| Other than above | ||||||
| 5 | B/W | Remote key less entry receiver signal | Input/Output | LOCK | Carry the Intelligent Key within the inside key antenna detection area, and then push the push-button ignition switch. (When receiving the signal from Intelligent Key) |
|
| Other than above (Signal receiving wait mode) | ||||||
| 6 | B | Remote key less entry receiver ground | - | - | - | 0 |
| 7 | B/R | Remote keyless entry receiver power supply | Output | - | - | |
| 8 | W | Push-button ignition switch LOCK indicator | Output | LOCK | Push-button ignition switch is in LOCK position | 0 |
| - | Push-button ignition switch is in any position (Except LOCK position) |
1.2 | ||||
| 9 | L | Push-button ignition switch ACC indicator | Output | ACC | Push-button ignition switch is in ACC position | 0 |
| - | Push-button ignition switch is in any position (Except ACC position) |
1.2 | ||||
| 10 | V | Push-button ignition switch ON indicator | Output | ON | Push-button ignition switch is in ON position | 0 |
| - | Push-button ignition switch is in any position (Except ON position) |
1.2 | ||||
| 13 | LG/B | Key slot illumination | Output | LOCK | Insert Intelligent Key into key slot and driver side door is open. | Battery voltage |
| Remove Intelligent Key from key slot. | 0 | |||||
| 15 | LG | Steering lock unit power source | Output | LOCK | - | Battery voltage |
| 16 | P/B | Steering lock unit signal | Input/Output | LOCK | Steering lock: Lock | Battery voltage |
| ACC | Steering lock: Unlock (Unlocked moment) | 0 | ||||
| NO | 0 | |||||
| 19 | BR/Y | Key switch signal | Input | LOCK | Insert Intelligent Key into key slot. | 0 |
| Remove Intelligent Key from key slot | Battery voltage | |||||
| 20 | B | Ground | - | - | - | 0 |
| 27 | V | A/T device (Detention switch) | Input | LOCK | A/T selector lever is in P position | 0 |
| ON | Other than above | Battery voltage | ||||
| 28 | SB | Starter relay | Input | ON | A/T selector lever is in N or P position | Battery voltage |
| - | Ignition switch position is in LOCK position or A/T selector lever is in any position other than N or P position | 0 | ||||
| 29 | V/R | Stop lamp switch | Input | - | Brake pedal depressed | Battery voltage |
| Brake pedal released | 0 | |||||
| 30 | L/W | Ignition power supply (ACC) | Input | ACC | Ignition switch position is in ACC or ON position | Battery voltage |
| 31 | GR | Ignition power supply (ON) | Input | ON | Ignition switch position is in ON or START position | Battery voltage |
| 33 | O | PDU signal | Input | LOCK | Steering lock: Lock | 0 |
| ACC | Steering lock: Unlock | 8 | ||||
| 34 | R | PDU feed back signal | Input | LOCK | Sleep condition (30 seconds or more after all doors are closed under the condition that the ignition switch position is in the LOCK position) | 1 |
| - | Wake-up condition (any condition other than above) | 0 | ||||
| 35 | LG | Vehicle speed signal | Input | ON | At speedometer operation (vehicle speed approx. 40 km/h) | |
| 37 | P | CAN-L | Input/Output | - | - | - |
| 38 | L | CAN-H | Input/Output | - | - | - |
| 39 | BR/W | Push-button ignition switch | Input | - | Push-button ignition switch is pressed | 0 |
| Push-button ignition switch is released | Battery voltage | |||||
| 40 | B | Ground | - | - | - | 0 |
| 41 | Y | Power source (fuse) | Input | - | - | Battery voltage |
| 42 | P | PDU wake up signal | Output | LOCK | Sleep condition (30 seconds or more after all doors are closed under the condition that the ignition switch position is in the LOCK position) | Battery voltage |
| - | Wake-up condition (Open driver door) | 0 | ||||
| 43 | G | Starter signal | Output | ON | At starter motor cranking | 0 |
| - | Any condition other than above | Battery voltage | ||||
| 46 | V | Steering lock control signal-1 | Output | - | Push-button ignition switch is pressed under the condition that Intelligent Key is in the vehicle or Intelligent Key is inserted | Battery voltage |
| LOCK | Ignition switch position is in LOCK position (Steering lock activated) | Battery voltage β 0 β Battery voltage (Battery voltage is detected when activating the steering lock) |
||||
| 47 | LG | Inside key antenna (+) signal (Instrument center) | Input/Output | LOCK | Any door open β closed (Door switch: ON β OFF) |
|
| 48 | V | Inside key antenna (-) signal (Instrument center) | Input/Output | |||
| 49 | B | Inside key antenna (+) signal (console) | Input/Output | LOCK | Any door open β closed (Door switch: ON β OFF) | |
| 50 | W | Inside key antenna (-) signal (console) | Input/Output | |||
| 51 | F/L | Inside key antenna (+) signal (Rear seat) | Input/Output | LOCK | Any door open β closed (Door switch: ON β OFF) | |
| 52 | R/W | Inside key antenna (-) signal (Rear seat) |
Input/Output | |||
| 53 | G/W | Inside key antenna (+) signal (Trunk room) |
Input/Output | LOCK | Any door open β closed (Door switch: ON β OFF) |
|
| 54 | LG | Inside key antenna (-) signal (Trunk room) |
Input/Output | |||
| 56 | B | Ground | - | - | - | 0 |
| 57 | L | Power source (fuse) | Input | - | - | Battery voltage |
| 58 | O | A/T device (Detention switch) | Output | LOCK | At sleep (30 seconds or more after all doors are closed under the condition that the ignition switch position is in the LOCK position) | 0 |
| At wake-up (Open driver door) | Battery voltage | |||||
| 63 | P | Stop lamp switch | Input | - | Brake pedal depressed | Battery voltage |
| Brake pedal released | Battery voltage | |||||
| 64 | L/R | Push-button ignition switch illumination | Output | - | Push-button ignition switch illumination is turned on | 2.6 |
| Push-button ignition switch illumination is turned off (15 seconds or more after the driver door is closed) |
0 | |||||
| 69 | O | Steering lock unit condition signal-1 | Input | LOCK | Steering lock: Lock | 0 |
| ACC | Steering lock: Unlock | Battery voltage | ||||
| ON | Battery voltage | |||||
| 70 | L/Y | Steering lock unit condition signal-2 | Input | LOCK | Steering lock: Lock | Battery voltage |
| ACC | Steering lock: Unlock | 0 | ||||
| ON | 0 | |||||
| 71 | LG | Steering lock control signal-2 | Output | LOCK | Push-button ignition switch is pressed under the condition that Intelligent Key is in the vehicle or Intelligent Key is inserted | Battery voltage |
| ACC | Ignition switch position is in LOCK position (Steering lock activated) | Battery voltage β 0 β Battery voltage (Battery voltage is detected when activating the steering lock) |
||||
| 72 | B | Ground | - | - | - | 0 |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
