DTC B0198. Chevrolet Lumina Ute 2009

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2009 🢒 Lumina Ute 🢒 DTC 🢒 DTC B0198

DTC B0198 RHD

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category

DTC Descriptors

DTC B0193 06: Blower Motor not Operating, Short to Ground or Open Circuit

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Blower Motor Control	B0193 06	B0193 06	--	--

The blower motor speed control, battery positive and ground circuits enable the control module to operate. The HVAC control module provides a pulse width modulation signal to the blower motor in order to command the blower motor speed.

Conditions for Running the DTC

•	The ignition is ON.

•	Ignition voltage is between 9-16 volts.

•	The HVAC module is ON.

Conditions for Setting the DTC

The blower motor draws more amperage than the HVAC control module is calibrated for.

Conditions for Clearing the DTC

•	The condition for setting the DTC is no longer present.

•	The DTC can be cleared using a scan tool.

Reference Information

Schematic Reference

HVAC Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

Ignition ON, operate the blower fan speed(s).

Circuit/System Testing

Ignition OFF, disconnect the harness connector at the blower motor.
Ignition ON, connect test lamp at the battery positive voltage terminal A and ground.

⇒	If the test lamp does not illuminate, test the battery positive voltage circuit for short to ground or an open/high resistance.

Connect test lamp between the battery positive voltage terminal A and the control circuit terminal B. The test lamp should dimly illuminate at high speeds and reduce in intensity as the blower speed is reduced.

⇒	If the test lamp does not illuminate. Test the control circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the HVAC control module.

⇒	If the test lamp does illuminate. Test or replace the blower motor..

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	Refer to Blower Motor Replacement

•	Control Module References for HVAC control module replacement, setup, and programming