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Home >> Pontiac >> 2005 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 106 (Retained Accessory Power System) >> Diagnostic Information and Procedures >> Diagnostic System Check - Retained Accessory Power >> Test Description
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Test Description

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
  2. 7:  The presence of DTCs which begin with U indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
Diagnostic System Check - Retained Accessory Power

Step Action Yes No
1 Install a scan tool.
Does the scan tool power up?		 Go to Step 2  Go to Scan Tool Does Not Power Up in Data Link Communications
2 
  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to establish communication with the body control module.
Does the scan tool communicate with the body control module?		 Go to Step 3  Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications
3
IMPORTANT: The engine may start during the following step. Turn OFF the engine as soon as you have observed the Crank power mode.
  1. Navigate, on a scan tool, to the Diagnostic Circuit Check and select Class 2 Power mode.
  2. Rotate the ignition switch through all of the positions while observing the class 2 power mode parameter.
Do the indicated ignition switch parameters match the actual switch positions?		 Go to Step 4  Go to Power Mode Mismatch in Body Control System
4
  1. Close all of the doors on the vehicle.
  2. With a scan tool, observe the state of the door jamb switches. With the doors closed they should be Inactive, Off or Closed.
  3. Open each door one at a time and observe the switch states on a scan tool, when a door is open. They should be Active, On or open. Close each door after each observation is complete.
Does the data displayed on the scan tool correlate with an open or closed state.		 Go to Step 5  Go to Diagnostic System Check - Lighting Systems in Lighting Systems
5 Select the body control module display DTCs function on the scan tool.
Does the scan tool display any DTCs?		 Go to Step 6  Go to Symptoms - Retained Accessory Power 
6 Does the scan tool display DTC B1445? Go to DTC B1475  Go to Step 7 
7  Does the scan tool display any DTCs which begin with a "U"? Go to Diagnostic Trouble Code (DTC) List in Data Link Communications Go to Step 7 
8 Does the scan tool display DTC B1000 or B1390? Go to Diagnostic Trouble Code (DTC) List in Body Control System Go to the system exhibiting the symptom
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