B1512-L

DTC B1511-L / B1512-L / B1515-L / B1530-L

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

1) Start engine and operate A/C system.

DTC Troubleshooting

NOTE:

- This flow shows "DTC B1511-L: Driver Side Temperature Control Actuator (Position Sensor) and/or Its Circuit Malfunction".
- Check "DTC B1512-L / B1515-L / B1530-L" in the same manner as "DTC B1511-L" referring to the following table.





1. Scan tool parameter check

Check "Air Mix Pos Sen (Driver)" using "Data list" mode on SUZUKI scan tool. Scan Tool Testing and Procedures

Is voltage below 0.1 V?
YES -
Go to Step 2.
NO -
Intermittent trouble.

2. Driver side temperature control actuator position sensor signal circuit check

Disconnect driver side temperature control actuator connector.
Check "Air Mix Pos Sen (Driver)" using "Data list" mode on SUZUKI scan tool. Scan Tool Testing and Procedures

Is voltage below 0.1 V?
YES -
Go to Step 3.
NO -
Replace driver side temperature control actuator. Temperature Control Actuator Removal and Installation

3. Driver side temperature control actuator position sensor signal circuit check

Push engine switch to change ignition mode to "ON".
Measure voltage between "RED/WHT" wire terminal of driver side temperature control actuator connector and ground.

Is voltage 5 V?
YES -
Go to Step 5.
NO -
Go to Step 4.

4. Driver side temperature control actuator position sensor signal circuit check

Disconnect "G20" connector.
Check the following points.
- Resistance of "RED/WHT" wire circuit: less than 1 ohms
- Resistance of "RED/WHT" wire circuit between driver side temperature control actuator and ground: infinity

Are they in good condition?
YES -
Replace HVAC control module and recheck DTC. HVAC Control Module Removal and Installation
NO -
Repair or replace defective wire harness.

5. Driver side temperature control actuator position sensor signal circuit check

Check that resistance between "GRY/RED" wire terminal and ground is infinity.

Is it in good condition?
YES -
Replace HVAC control module and recheck DTC. HVAC Control Module Removal and Installation
NO -
Repair or replace defective wire harness.