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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 113 (Seat Heating System & Seat Cooling System) >> Diagnostic Information and Procedures >> DTC B1913 or B1918 >> Test Description

Test Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

DTC B1913 or B1918

Step Action Yes No
Schematic Reference: Heated/Cooled Seat Schematics 
Connector End View Reference: Heated/Cooled Seat Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the appropriate Seat Mode Sw. parameter in the appropriate door switch Input data list.
Does the scan tool display OFF?		 Go to Step 3  Go to Step 4 
3
  1. Activate the suspect heated seat switch.
  2. With a scan tool, observe the appropriate Seat Mode Sw. parameter.
Does the suspect Seat Mode Sw. parameter change state?		 Go to Testing for Intermittent Conditions and Poor Connections Go to Step 4 
4
  1. Turn OFF the ignition.
  2. Disconnect the heated seat switch connector.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the appropriate heated seat Sw. parameter.
Does the scan tool display OFF?		 Go to Step 6  Go to Step 5 
5 Inspect for poor connections at the harness connector of the door switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 9  Go to Step 7 
6 Inspect for poor connections at the harness connector of the heated seat switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 9  Go to Step 8 
7 Replace the door switch. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 9  -
8 Replace the heated seat switch. Refer to Heated Seat Switch Replacement - Front (w/o KB6) .
Did you complete the replacement?		 Go to Step 9  -
9
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC, as specified in the supporting text.
Does the DTC reset?		 Go to Step 2  System OK
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