Fig. 49: Connecting Terminals A And B With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there a clicking noise from the A/C compressor clutch?
YES : The A/C MG CLUTCH RLY CL- wire is OK. Update the PCM See PCM REMOVAL AND
INSTALLATION or PCM UPDATE if it does not have the latest software, or substitute a known-
good PCM See PCM REMOVAL AND INSTALLATION or PCM UPDATE , then recheck. If the
symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the
symptom/indication goes away and the PCM was substituted, replace the original PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE .
NO : Check for poor connections or loose terminals at the A/C compressor clutch relay and the PCM. If
the connections and terminals are OK, check the A/C compressor clutch relay. If needed, repair open in
the A/C MG CLUTCH RLY CL- wire between the PCM (A12) and the A/C compressor clutch relay, or
other parts in the A/C systems.
AIR MIX CONTROL MOTOR TEST
SPECIAL TOOL DESCRIPTION
Image
Description/Tool Number
Backprobe Set 07SAZ-001000A (2)
TEST
NOTE:
Before testing the motor, check for HVAC DTCs.
1. Air Mix Control Motor - Test
1. Disconnect the air mix control motor connector.
NOTE:
Incorrectly applying power and ground to the air mix control motor
will damage it. Follow the instructions carefully.
Fig. 50: Identifying Air Mix Control Motor Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
2. Connect battery power to terminal No. 7 of the air mix control motor, and ground terminal No. 6;
the air mix control motor should run smoothly, and stop at MAX HOT. If it does not, reverse the
connections; the air mix control motor should run smoothly, and stop at MAX COOL. When the air
mix control motor stops running, disconnect battery power immediately.
3. If the air mix control motor did not run in step 2, remove it, then check the air mix control linkage
and door for smooth movement.
ο¬
If the linkage and door move smoothly, go to step 4.
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If the linkage or door sticks or binds, repair them as needed.
4. Measure the resistance between terminals No. 1 and No. 3. It should be between 4.2 kohms and 7.8
kohms.
5. Reconnect the air mix control motor connector.
6. Turn the ignition switch to ON (II).
7. Using the backprobe set, measure the voltage between terminals No. 1 and No. 2.
MAX COOL: About 0.5 V
MAX HOT: About 4.0 V
8. If either the resistance or the voltage readings are not as specified, replace the air mix control
motor.
BLOWER POWER TRANSISTOR TEST (CLIMATE CONTROL)
REMOVAL
1. Passenger's Dashboard Undercover
1. Gently pull down the passenger's dashboard undercover (A) to detach the clips (B), then pull away
the undercover to release the pins (C) from the holder (D).
2024 Honda CR-V Owner's Manual
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