Dtc B1531: Air Intake Control Actuator And/Or Its Circuit Malfunction - Suzuki GRAND VITARA Owner's Manual

DTC B1531: Air Intake Control Actuator and/or Its Circuit Malfunction

Wiring Diagram
2
ORN
M
GRN
RED/WHT
WHT/GRN
BLK/RED
[A]: HVAC control module connector "G52" (harness side view)
1. HVAC control module
2. Air intake control actuator
DTC Detecting Condition and Trouble Area
Difference between target opening and actual opening is more than specified
value even though air intake control actuator has operated for 15 seconds.
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start A/C system and select air intake selector at "FRE" position.
4) Select air intake selector at "REC" position and wait for 1 min. or more.
5) Check DTC.
DTC Troubleshooting
Step
1 Visual check
1) Check if there is any obstruction in operating range of
actuator linkage and if actuator linkage operates
smoothly.
Is it in good condition?
2 Wire harness check
1) Disconnect connector from air intake control actuator
with ignition switch turned OFF.
2) Check for proper connection to temperature control
actuator connector at "ORN" and "GRN" wire terminals.
3) If OK, measure voltage between "ORN" wire terminal of
temperature control actuator connector and vehicle body
ground with ignition switch turned ON when air intake
selector is operation to FRE position.
Is voltage 10 – 14 V?
1
12V
3
G52-31
G52-32
5V
5V
G52-14
G52-22
G52-13
4
DTC Detecting Condition
Action
Air Conditioning System:
[A]
14 13
32 31
3. To other actuators
4. To other sensors
• Air intake control actuator circuit
• Air intake control linkage
• Air intake control actuator
• HVAC unit
• HVAC control module
Yes
Go to Step 2.
Go to Step 6.
7B-48
S5JB0A7204041
22
I5JB0A720027-01
Trouble Area
No
Obstruction in operating
range of actuator
linkage, actuator linkage
faulty and/or internal
fault of HVAC unit.
Go to Step 3.