Nissan Pathfinder: Heater & Air Conditioning Control System - Ecu Diagnosis Information
Nissan Pathfinder (R53) 2022-2025 Service Manual / Ventilation, Heater & Air Conditioner :: Heater & Air Conditioning Control System / Automatic Air Conditioning / Ecu Diagnosis Information
A/c Auto Amp. Nissan Pathfinder 5th Gen
Values on the Diagnosis Tool
NOTE:
The following table includes information (items) inapplicable to this Nissan Pathfinder vehicle: For information (items) applicable to this vehicle, refer to CONSULT display items.
| Monitor item | Condition | Value/Status | |
|---|---|---|---|
| IN-VEH TEMP | Ignition switch ON |
Equivalent to in-Nissan Pathfinder vehicle temperature [Display range: -40 - 215° C (-40 – 419° F)] |
|
| INT TEMP SEN | Ignition switch ON |
Equivalent to evaporator fin temperature [Display range: -40 - 215° C (-40 – 419° F)] |
|
| SUNLOAD SEN | Ignition switch ON |
Equivalent to sunload amount (Display range: 0 - 1045 W/m^2) |
|
| AMB SEN CAL | Ignition switch ON |
Equivalent to ambient temperature [Display range: -40 - 215° C (-40 – 419° F)] |
|
| IN-VEH CAL | Ignition switch ON |
Equivalent to in-Nissan Pathfinder vehicle temperature [Display range: -40 - 215° C (-40 – 419° F)] |
|
| PASS IN CAL | Ignition switch ON |
Equivalent to passenger side in-Nissan Pathfinder vehicle temperature [Display range: -40 - 215° C (-40 – 419° F)] |
|
| INT TEMP CAL | Ignition switch ON |
Equivalent to evaporator fin temperature [Display range: -40 - 215° C (-40 – 419° F)] |
|
| SUNL SEN CAL | Ignition switch ON |
Equivalent to sunload amount (Display range: 0 - 1045 W/m^2) |
|
| XM | Ignition switch ON |
Value according to target air flow temperature (driver side) [Display range: -100 - 150° C (-148 – 302° F)] |
|
| FAN REQ SIG | Engine: Run at idle after warming up | Front blower motor: ON | On |
| Front blower motor: OFF | Off | ||
| COMP REQ SIG | Engine: Run at idle after warming up | A/C switch: ON | On |
| A/C switch: OFF | Off | ||
| A/C comp clutch status | Engine: Run at idle after warming up | A/C switch: ON | On |
| A/C switch: OFF | Off | ||
| RR XM | Ignition switch ON |
Value according to target air flow temperature (rear) [Display range: -100 - 150° C (-148 – 302° F)] |
|
| Assist seat target air temperature | Ignition switch ON |
Value according to target air flow temperature (passenger side) [Display range: -100 - 150° C (-148 – 302° F)] |
|
| Blower fan duty | Engine: Run at idle after warming up | Front blower motor: ON |
|
| Front blower motor: OFF | 0 | ||
| Compressor ECV duty | Engine: Run at idle after warming up | (Display range: 0 - 100%) | |
| AMB TEMP SEN | Ignition switch ON |
Equivalent to ambient temperature (Display range: -50 - 70° C) [Display range: -50 - 70° C (-58 – 158° F)] |
|
| Nissan Pathfinder Vehicle speed | When driving the vehicle | Equivalent to speedometer reading | |
| ODO/TRIP METER | Ignition switch ON | Equivalent to odometer reading | |
| Engine RPM | Engine: Running | Equivalent to tachometer reading | |
| ENG COOL TEMP | Ignition switch ON | Equivalent to engine coolant temperature | |
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
|
Terminal No. (Wire color) | Description | Condition |
Value (Approx.) | ||||
|---|---|---|---|---|---|---|---|
| + | − | Signal name | Input/Output | ||||
|
1 (LG) |
58 (B) |
Door motor power supply | Output | Ignition switch ON | Battery voltage | ||
|
2 (Y) |
58 (B) |
LIN (door motor) | Input/Output | Ignition switch ON |
|
||
|
23 (W) |
26 (G) |
Intake sensor signal | Input | Ignition switch ON |
|
||
|
26 (G) |
Ground | Sensor ground (intake) | — | Ignition switch ON | 0 V | ||
|
27 (BR) |
Ground | Door motor ground | — | Ignition switch ON | 0 V | ||
|
34 (L) |
58 (B) |
Front blower motor control | Output | Ignition switch ON | Front blower motor: OFF | Battery voltage | |
| Front blower motor: 1st speed (manual) |
|
||||||
| Front blower motor: 7th speed (manual) |
|
||||||
|
45 (G) |
58 (B) |
LIN (heated seat) | Input/Output | Ignition switch ON |
|
||
|
47 (R) |
78 (G) |
Sunload sensor LH signal | Input | Ignition switch ON |
|
||
|
48 (W) |
78 (G) |
Front in-Nissan Pathfinder vehicle sensor signal | Input | Ignition switch ON |
|
||
|
50 (L) |
— | CAN-High | Input/Output | — | — | ||
|
56 (BR) |
58 (B) |
Heated steering wheel relay control signal | Output | Engine running | Heated steering wheel switch: ON | 0 V | |
| Other than the above | Battery voltage | ||||||
|
58 (B) |
Ground | Ground | — | Ignition switch ON | 0 V | ||
|
60 (P) |
58 (B) |
Accessory power supply | Input | Ignition switch OFF (auto ACC status) or ON | Battery voltage | ||
| Ignition switch OFF (not auto ACC status) | 0 V | ||||||
|
63 (W) |
78 (G) |
Sunload sensor RH signal | Input | Ignition switch ON |
|
||
|
68 (BG) |
58 (B) |
LIN (A/C control) | Input/Output | Ignition switch ON |
|
||
|
70 (P) |
— | CAN-Low | Input/Output | — | — | ||
|
73 (W) |
78 (G) |
Rear in-Nissan Pathfinder vehicle sensor signal | Input | Ignition switch ON |
|
||
|
74 (BR) |
58 (B) |
Rear blower motor control | Output | Ignition switch ON | Rear blower motor: OFF | Battery voltage | |
| Rear blower motor: 1st speed (manual) |
|
||||||
| Rear blower motor: 7th speed (manual) |
|
||||||
|
78 (G) |
Ground | Sensor ground (in-Nissan Pathfinder vehicle, sunload) | — | Ignition switch ON | 0 V | ||
Fail-safe
FAIL-SAFE FUNCTION
-
A/C auto amp. performs fail-safe control when any DTC are detected.
DTC CONSULT screen terms (Trouble diagnosis content) Fail-safe B24A6-11 IN-Nissan Pathfinder Vehicle SENSOR In-vehicle temperature is calculated as 25° C (77° F) and air conditioning system is controlled. B24A6-15 IN-Nissan Pathfinder Vehicle SENSOR -
If a CAN communication error exists between the A/C auto amp., ECM, IPDM E/R, BCM and combination meter for 2 seconds or longer, air conditioning is controlled under the following conditions:
A/C compressor : OFF -
If a LIN communication error exists between the A/C auto amp. and A/C switch assembly for 30 seconds or longer, air conditioning is controlled under the following conditions:
A/C compressor : ON Air outlet : AUTO Air inlet : FRE (fresh air intake) Front blower fan speed : AUTO Set temperature : Setting before communication error occurs
DTC Index
×: Applicable
| DTC |
Items (CONSULT screen terms) | Fail-safe | Reference |
|---|---|---|---|
| B2480-93 | Rear air mix door motor | — | DTC Description |
| B2490-13 | Blower motor assembly FL | — | DTC Description |
| B2490-19 | Blower motor assembly FL | — | DTC Description |
| B2492-13 | Blower motor assembly FR | — | DTC Description |
| B2492-19 | Blower motor assembly FR | — | DTC Description |
| B2495-13 | Blower motor assembly RL | — | DTC Description |
| B2495-19 | Blower motor assembly RL | — | DTC Description |
| B2496-13 | Blower motor assembly RR | — | DTC Description |
| B2496-19 | Blower motor assembly RR | — | DTC Description |
| B24A0-49 | A/C AUTO AMP. | — | DTC Description |
| B24A1-16 | A/C AUTO AMP. POWER SUPPLY | — | DTC Description |
| B24A1-17 | A/C auto AMP. | — | DTC Description |
| B24A2-55 | Configuration not implement | — | DTC Description |
| B24A4-11 | INTAKE SENSOR | — | DTC Description |
| B24A4-15 | INTAKE SENSOR | — | DTC Description |
| B24A6-11 | IN-Nissan Pathfinder Vehicle SENSOR | × | DTC Description |
| B24A6-15 | IN-Nissan Pathfinder Vehicle SENSOR | × | DTC Description |
| B24B4-02 | A/C CONTROL COMM | — | DTC Description |
| B24C6-12 | BLOWER MOTOR CONTROL | — | DTC Description |
| B24C6-14 | BLOWER MOTOR CONTROL | — | DTC Description |
| B24F4-12 | Heated steering wheel relay | — | DTC Description |
| B24F4-14 | Heated steering wheel relay | — | DTC Description |
| B24F5-93 | Mode door motor | — | DTC Description |
| B24F6-93 | Intake door motor | — | DTC Description |
| B24F7-93 | Air mix door motor 1 | — | DTC Description |
| B24F8-93 | Air mix door motor 2 | — | DTC Description |
| U1CA1-08 | LIN communication 2 | — | DTC Description |
| U1CA2-08 | LIN communication 3 | — | DTC Description |
| U1CA3-08 | LIN communication 4 | — | DTC Description |
| U1CA6-02 | Blower motor assembly FR comm | — | DTC Description |
| U1CA7-02 | Blower motor assembly FL comm | — | DTC Description |
| U1CA8-02 | Blower motor assembly RR comm | — | DTC Description |
| U1CA9-02 | Blower motor assembly RL comm | — | DTC Description |
| U1CAA-02 | Mode door motor | — | DTC Description |
| U1CAB-02 | Intake door motor | — | DTC Description |
| U1CAC-02 | Air mix door motor 1 | — | DTC Description |
| U1CAD-02 | Air mix door motor 2 | — | DTC Description |
| U1CAE-02 | Rear air mix door motor | — | DTC Description |
| U1CB1-02 | A/C control 2 communication | — | DTC Description |
| U2140-87 | CAN comm err (ECM) | — | DTC Description |
| U2148-87 | CAN comm err (brake control unit) | — | DTC Description |
| U214E-87 | CAN comm err (combination meter) | — | DTC Description |
| U214F-87 | CAN comm err (BCM) | — | DTC Description |
| U2154-87 | CAN comm err (MIU) | — | DTC Description |
| U215B-87 | CAN comm err (IPDM E/R) | — | DTC Description |
Ecm, Ipdm E/r, Bcm Nissan Pathfinder Fifth generation
List of ECU Reference
| ECU | Reference |
|---|---|
| ECM | Values on the Diagnosis Tool |
| Reference Value | |
| Fail safe | |
| DTC Inspection Priority Chart | |
| DTC Index | |
| IPDM E/R | Values on the Diagnosis Tool |
| Reference Value | |
| Fail-safe | |
| DTC Inspection Priority Chart | |
| DTC Index | |
| BCM | Values on the Diagnosis Tool |
| Reference Value | |
| Fail-safe | |
| DTC Inspection Priority Chart | |
| DTC Index |
Nissan Pathfinder (R53) 2022-2025 Service Manual
Ecu Diagnosis Information
Contact Us
Nissan Pathfinder Info Center
Email: info@nipathfinder.com
Phone: +1 (800) 123-4567
Address: 123 Pathfinder Blvd, Nashville, TN 37214, USA
Working Hours: Mon–Fri, 9:00 AM – 5:00 PM (EST)
