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Dtc B1514: Air Flow Control Actuator (Motor) And/Or Its Circuit Malfunction - Suzuki SX4 Service Manual

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7B-64 Air Conditioning System: Automatic Type
Step
4
Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from temperature control
actuator and HVAC control module.
3) Check for proper connection to actuator motor drive
circuit terminals of temperature control actuator and
HVAC control module connectors.
4) If OK, check that actuator motor drive circuit of
temperature control actuator is as follows.
• Wiring harness resistance of each actuator motor
drive circuit is less than 3 Ω
• Insulation resistance of each actuator motor drive
circuit is infinity between temperature control actuator
connector and vehicle body ground
• Circuit voltage of each actuator motor drive circuit is 0
– 1 V with ignition switch turned ON
Are they in good condition?
5
Wire harness check
Check position sensor circuit of temperature control actuator
for condition referring to Step 2 of "DTC B1511: Temperature
Control Actuator (Position Sensor) and/or Its Circuit
Malfunction: Automatic Type".
Is it in good condition?
6
Temperature control actuator check
1) Check temperature control actuator for performance
referring to "Temperature Control Actuator and Its Circuit
Inspection: Automatic Type".
Is it in good condition?

DTC B1514: Air Flow Control Actuator (Motor) and/or Its Circuit Malfunction

Wiring Diagram
2
[D]
BRN/YEL
BRN/WHT
3
WHT/BLU
4
[D]: Air flow actuator motor drive circuit
1. HVAC control module
DTC Detecting Condition and Trouble Area
Motor of air flow control actuator does not move longer than specified time.
Action
1
12V
G20-15
G20-16
5V
5V
WHT
G20-12
G20-28
ORN
G20-24
DTC Detecting Condition
Go to Step 5.
Go to Step 6.
Substitute a known-
good HVAC control
module and recheck.
14
13
12
11
10
9
8
30
29
28
27
26
25
24
2. Air flow control actuator
3. To temperature control actuator
Yes
Actuator motor drive
circuit(s) is open, short
or high resistance.
Repair or replace.
Replace temperature
control actuator.
G20
7
6
5
4
3
23
22
21
20
19
18
17
4. To other sensors
Trouble Area
• Air flow control actuator circuit
• Air flow control linkage
• Air flow control actuator
• HVAC unit
• HVAC control module
No
S7RW0A7224016
2
1
16
15
I6RW0C722007-01

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