CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER]

#
CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER]

B3E074061190W08

1. Install the PJB.

2. Turn the ignition switch to the ON position.

3. Connect the negative (-) lead of the tester to body ground.

4. By inserting the positive (+) lead of the tester into each climate control unit terminal, measure the voltage according to the terminal voltage table.

  • If there is any malfunction, inspect the parts under "Inspection item (s)".

  - If the parts under "Inspection item (s)" are found to be normal, replace the climate control unit.

## Terminal Voltage Table (Reference)

Terminal | Signal name | Connected to | Measurement condition | Voltage (V) | Inspection item (s)
--- | --- | --- | --- | --- | ---
A | - | - | - | - | -
B | - | - | - | - | -
C | - | - | - | - | -
D | B+ | ROOM 15 A fuse | Under any condition | B+ | • Wiring harness: continuity, short circuit (Climate control unit- fuse: D-ROOM 15 A) • ROOM 15 A fuse
E | - | - | - | - | -
F | IG2 | A/C 10 A fuse | IG SW ON | B+ | • Wiring harness: continuity, short circuit (Climate control unit- fuse: F-A/C 10 A) • A/C 10 A fuse
IG SW LOCK | 1.0 or less | • Wiring harness: continuity, short circuit (Climate control unit- fuse: F-A/C 10 A)
G | - | - | - | - | -
H | - | - | - | - | -
I | - | - | - | - | -
J | GND | Body ground | Under any condition | 1.0 or less | • Wiring harness: continuity (Climate control unit-GND: J-GND)
K | - | - | - | - | -
L | Sensor GND | Evaporator temperature sensor | Under any condition | 1.0 or less | • Climate control unit: terminal voltage (J)
M | A/C | PJB | A/C switch ON, fan switch at 1st | 1.0 or less | • Wiring harness: continuity (Climate control unit-PJB: M-J-04 AF)
A/C switch OFF | B+ | • Wiring harness: continuity, short circuit (Climate control unit-PJB: M-J-04 AF)
N | Evaporator temperature sensor input | Evaporator temperature sensor | Compared with temperature detected by evaporator temperature sensor | Refer to graph 1 | • Wiring harness: continuity (Climate control unit-evaporator temperature sensor: N-B, L-A) • Wiring harness: short circuit (Climate control unit-evaporator temperature sensor: N-B) • Evaporator temperature sensor • Climate control unit: terminal voltage (F, J)
O | Motor operation | Air intake actuator | Switched to RECIRCULATE | 1.0 or less | • Wiring harness: continuity, short circuit (Climate control unit-air intake actuator: S-G, O-E) • Air intake actuator
Switched to FRESH | 12
P | Rear window defroster switch indicator light | PJB | Rear window defroster switch ON | 1.0 or less | • Wiring harness: continuity (Climate control unit-PJB: P-J-04 I) • PJB
Rear window defroster switch OFF | 4.0 | • Wiring harness: short circuit (Climate control unit-PJB: P-J-04 I) • PJB
Q | Motor operation | Air intake actuator | Switched to RECIRCULATE | 12 | • Wiring harness: continuity, short circuit (Climate control unit-air intake actuator: Q-C, S-G) • Air intake actuator
Switched to FRESH | 1.0 or less
R | Rear window defroster switch | PJB | Rear window defroster switch ON | 10 or less | • Wiring harness: continuity, short circuit (Climate control unit-PJB: R-J-04 AD) • Climate control unit: terminal voltage (J) • PJB
Rear window defroster switch OFF | 10 or less | • Wiring harness: continuity, short circuit (Climate control unit-PJB: R-J-04 AD) • PJB
S | Motor operation | Air intake actuator | Switched to RECIRCULATE | 12 | • Wiring harness: continuity, short circuit (Climate control unit-air intake actuator: S-G, O-E, Q-C) • Air intake actuator
Switched to FRESH | 1.0 or less
T | FAN signal | Fan switch | FAN switch ON | 1.0 or less | • Wiring harness: continuity (Climate control unit-fan switch: T-A) • Fan switch
FAN switch OFF | 4.4 | • Wiring harness: continuity (Climate control unit-fan switch: T-A) • Climate control unit: terminal voltage (F) • Fan switch
U | TNS signal | Panel light control switch | Headlight switch OFF | 1.0 or less | • Wiring harness: continuity (Climate control unit-panel light control switch: U-F) • Panel light control switch • Climate control unit: terminal voltage (V)
Headlight switch ON | 12 | • Wiring harness: short circuit (Climate control unit-panel light control switch: U-F)
V | TNS signal | PJB | Headlight switch OFF | 1.0 or less | • Wiring harness: short circuit (Climate control unit-PJB: V-J-03 H) • PJB • Headlight switch
Headlight switch ON | B+ | • Wiring harness: continuity, short circuit (Climate control unit-PJB: V-J-03 H) • PJB • Headlight switch
W | - | - | - | - | -
X | - | - | - | - | -

| -