- Air conditioning harness assembly
- Air conditioning amplifier assembly
| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Vehicle Interior | Section: Heating/Air Conditioning | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002LLQ009X |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
B1497/97 |
BUS IC Communication Malfunction |
DESCRIPTION
The air conditioning harness assembly connects the air conditioning amplifier assembly and each servo motor. The air conditioning amplifier assembly supplies power and sends operation instructions to each servo motor through the air conditioning harness assembly. Each servo motor sends the damper position information to the air conditioning amplifier assembly.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B1497/97 |
An open or error in the communication line. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY |
(a) Remove the air conditioning amplifier assembly with its connectors still connected
.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E36-1 (GND) - z45-1 (BUS G) |
Always |
Below 1 Ω |
|
E36-1 (GND) - z45-8 (BUS G) |
||
|
z45-1 (BUS G) - Body ground |
||
|
z45-8 (BUS G) - Body ground |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
z45-1 (BUS G) - z45-3 (B BUS) |
Always |
11 to 14 V |
|
z45-8 (BUS G) - z45-10 (B BUS) |
Always |
11 to 14 V |
|
z45-1 (BUS G) - z45-2 (BUS) |
Engine switch on (IG) |
Pulse generation |
|
z45-8 (BUS G) - z45-9 (BUS) |
|
|
|