Dtc B1511: Temperature Control Actuator (Position Sensor) And/Or Its Circuit Malfunction - Suzuki 2006 SX4 Service Manual

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Service manual (1556 pages)

Table of Contents

7B-61 Air Conditioning System: Automatic Type

DTC Troubleshooting

Was "Air Conditioning System Check" performed?

Wire harness check

1) Turn ignition switch to OFF position.

2) Disconnect connectors from sunload sensor and HVAC

control module.

3) Check for proper connection to each signal circuit

terminal and ground circuit terminal of sunload sensor

and HVAC control module connectors.

4) If OK, check that sunload sensor circuit is as follows.

• Wiring harness resistance of each sunload sensor

signal circuit and ground circuit is less than 3 Ω

• Insulation resistance of each sunload sensor signal

circuit and ground circuit between sunload sensor

connector and vehicle body ground is Infinity

• Circuit voltage of each sunload sensor signal circuit

and ground circuit is 0 – 1 V with ignition switch turned

Are they in good condition?

Sunload sensor power supply voltage check

1) Connect connector to HVAC control module with ignition

switch turned OFF.

2) Turn ignition switch to ON position.

3) Measure voltage between signal terminal and ground

terminal of sunload sensor connector.

Is voltage 4.5 – 5.5 V?

Sunload sensor check

1) Check sunload sensor for performance referring to

"Sunload Sensor Inspection".

Is it in good condition?