2003 LS 430 - AC Codes
03-30-16, 07:56 PM
#1
Lead Lap
Thread Starter
2003 LS 430 - AC Codes
Hello,
I checked my AC after the winter and it's not blowing cold air. I pulled the AC codes by holding the the "AUTO" and "RECIRCULATION" buttons on the dash and got the following error codes:
21
24
35
Can anyone tell me what they mean. I'm told 21 is for the solar sensor and since it was dark out I could understand why it would pop up.
For the other two I'm not sure. Can someone help me out?
I checked my AC after the winter and it's not blowing cold air. I pulled the AC codes by holding the the "AUTO" and "RECIRCULATION" buttons on the dash and got the following error codes:
21
24
35
Can anyone tell me what they mean. I'm told 21 is for the solar sensor and since it was dark out I could understand why it would pop up.
For the other two I'm not sure. Can someone help me out?
03-30-16, 09:14 PM
#2
Instructor
B1421 (passenger side circuit) and B1424 (driver side circuit) is the front solar sensor, shining a bright light on it should clear these 2
B1435 is the Cool Air Bypass Damper Position Sensor Circuit (Passenger Side)
You can inspect the Cool Air Bypass Damper Control Servomotor by removing it and:
1) Applying battery voltage to terminal 5 and ground to terminal 4 should make the lever move smoothly to the SHUT position
2) Applying battery voltage to terminal 4 and ground to terminal 5 should make the lever move smoothly to the OPEN position.
B1435 is the Cool Air Bypass Damper Position Sensor Circuit (Passenger Side)
You can inspect the Cool Air Bypass Damper Control Servomotor by removing it and:
1) Applying battery voltage to terminal 5 and ground to terminal 4 should make the lever move smoothly to the SHUT position
2) Applying battery voltage to terminal 4 and ground to terminal 5 should make the lever move smoothly to the OPEN position.
04-05-16, 07:54 PM
#3
Lead Lap
Thread Starter
B1421 (passenger side circuit) and B1424 (driver side circuit) is the front solar sensor, shining a bright light on it should clear these 2
B1435 is the Cool Air Bypass Damper Position Sensor Circuit (Passenger Side)
You can inspect the Cool Air Bypass Damper Control Servomotor by removing it and:
1) Applying battery voltage to terminal 5 and ground to terminal 4 should make the lever move smoothly to the SHUT position
2) Applying battery voltage to terminal 4 and ground to terminal 5 should make the lever move smoothly to the OPEN position.
B1435 is the Cool Air Bypass Damper Position Sensor Circuit (Passenger Side)
You can inspect the Cool Air Bypass Damper Control Servomotor by removing it and:
1) Applying battery voltage to terminal 5 and ground to terminal 4 should make the lever move smoothly to the SHUT position
2) Applying battery voltage to terminal 4 and ground to terminal 5 should make the lever move smoothly to the OPEN position.
Do you have instructions on how to remove the Cool Air Bypass Damper Control Servomotor? Is this a big job?
04-26-16, 04:15 PM
#4
Lead Lap
Thread Starter
Can anyone help me out with how to access the Cool Air Bypass Damper Control Servomotor to diagnose it? rkw?
04-27-16, 05:56 AM
#6
Lead Lap
Thread Starter
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