| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VK17 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: IG Power Source Circuit; 2016 - 2020 MY Sienna [12/2015 - ] | ||
|
IG Power Source Circuit |
DESCRIPTION
This is the main power source supplied to the air conditioning amplifier when the ignition switch is ON. This power source is used for operating components, such as the air conditioning amplifier and servo motors.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
INSPECT AIR CONDITIONING AMPLIFIER |
|
(a) Disconnect the air conditioning amplifier connector. |
|
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
D75-1 (IG+) - D75-14 (GND) |
Ignition switch ON |
11 to 14 V |
Text in Illustration
|
*a |
Rear view of wire harness connector (to Air Conditioning Amplifier) |
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See page
|
![2016 MY Sienna [12/2015 - 08/2016]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: PROBLEM SYMPTOMS TABLE](/t3Portal/stylegraphics/info.gif)
|
|
2. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BODY GROUND) |
|
(a) Disconnect the air conditioning amplifier connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D75-14 (GND) - Body ground |
Always |
Below 1 Ω |
Text in Illustration
|
*a |
Rear view of wire harness connector (to Air Conditioning Amplifier) |
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 NO. 2 RELAY - AIR CONDITIONING AMPLIFIER) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|