B1502-L

DTC B1502-L

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

1) Start engine and operate A/C system.

DTC Troubleshooting

1. Scan tool parameter check

Check "Cabin Temperature" using "Data list" mode on SUZUKI scan tool. Scan Tool Testing and Procedures

Is temperature over 87.5 °C (189.5 °F)?
YES -
Go to Step 2.
NO -
Intermittent trouble.

2. Inside air temperature sensor signal circuit check

Disconnect inside air temperature sensor connector.
Check "Cabin Temperature" using "Data list" mode on SUZUKI scan tool. Scan Tool Testing and Procedures

Is temperature over 87.5 °C (189.5 °F)?
YES -
Go to Step 3.
NO -
Replace inside air temperature sensor. Inside Air Temperature Sensor Removal and Installation

3. Inside air temperature sensor signal circuit check

Disconnect "G20" connector.
Check that resistance between "LT GRN/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.