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.