Dtc B1511 (No.11): Temperature Control Actuator (Position Sensor) And/Or Its Circuit Malfunction - Suzuki Liana RH413 Service Manual

DTC B1511 (No.11): Temperature Control Actuator (Position Sensor) and/or its Circuit Malfunction

Wiring Diagram
2
1. HVAC control module
DTC Detecting Condition and Trouble Area
Signal from temperature control position sensor is less than the specified
(0.0 V) or more than the specified (5.0 V).
DTC Troubleshooting
Step
1 1) Turn ignition switch OFF, and then disconnect
temperature control actuator connector referring to
"Temperature Control Actuator Removal and Installation
in Section 7A".
2) Turn ignition switch ON, and then check voltage
between "RED/WHT" wire terminal at temperature
control actuator connector and body ground.
Is voltage about 5 V?
2 1) Turn ignition switch OFF, and then disconnect HVAC
control module connector referring to "HVAC Control
Module Removal and Installation in Section 7A".
2) Check resistance between "RED/WHT" wire terminal at
temperature control actuator connector and "RED/WHT"
wire terminal at HVAC control module connector.
Is resistance less than 1 M
3 1) Check resistance between "RED/WHT" wire terminal
and body ground.
Is resistance more than 1 M
4 1) With ignition switch ON position, check voltage between
"RED/WHT" wire terminal and "BLK/RED" wire terminal
at temperature control actuator connector.
Is voltage about 5 V?
5 1) With ignition switch ON position, check voltage between
"WHT" wire terminal and "BLK/RED" wire terminal at
temperature control actuator connector.
Is voltage about 5 V?
5V
G77-26
RED/WHT
G77-28
WHT
BLK/RED G77-9
2. Temperature control actuator
DTC Detecting Condition
Action
Ω
?
Ω
?
Air Conditioning System: Automatic Type 7B-60
1
5V
28
3. HVAC control module connector "G77" (viewed from harness side)
Go to Step 4.
Go to Step 3.
Poor connection of
"RED/WHT" wire
terminal at HVAC
control module
connector, and/or HVAC
control module faulty.
Go to Step 5.
Go to Step 8.
3
9
26
Trouble Area
• "RED/WHT", "WHT" and/or "BLK/
RED" wire faulty
• Temperature control actuator faulty
• HVAC control module faulty
Yes
Go to Step 2.
"RED/WHT" wire open
or high resistance.
"RED/WHT" wire
shorted to ground.
"BLK/RED" wire open,
poor connection of
"BLK/RED" wire
terminal at HVAC
control module
connector, and/or HVAC
control module faulty.
Go to Step 6.
S3RH0A7224016
I3RH0A722013-01
No