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Diagnostic Aids

WARNING: This page is about a different car, the 2005 Suzuki Swift +, 2005 Pontiac Wave, and 2005 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.

The order in which DTCs are diagnosed is very important. Failure to diagnose the DTCs in the order specified may result in extended diagnostic time, incorrect diagnosis, and incorrect parts replacement.

Diagnostic System Check - SIR

Step Action Values Yes No
CAUTION: Refer to SDM Voltage After Ignition Is Turned OFF Caution in Cautions and Notices.
CAUTION: Refer to Sensing and Diagnostic Module Handling Caution in Cautions and Notices.
1
  1. Turn the ignition switch ON.
  2. Inspect the warning lamp.
Does the warning lamp turn OFF after 4 seconds?		 - System OK Go to Step 2 
2
  1. Connect the scan tool cable to the data link connector (DLC).
  2. Connect the scan tool power cable to the cigar lighter socket.
  3. Select the air bag main menu on the scan tool.
  4. Select Fail Code View & Clear from the displayed menu of the DTCs.
Are there any active fault codes?		 - Go to Diagnostic Trouble Code (DTC) List  Go to Step 3 
3 Check fuse F8.
Is the fuse F8 open?		 - Go to Step 4  Go to Step 5 
4 Replace fuse F8.
Is the replacement complete?		 - System OK -
5
  1. Disconnect the connector C214.
  2. Check for a short to ground between fuse F8 and terminal 3 of connector C214.
Is the wiring harness shorted to ground?		 - Go to Step 6  Go to Step 7 
6 Repair a short to ground between fuse F8 and terminal 3 of connector C214.
Is the repair complete?		 - System OK -
7
  1. Disconnect the sensing and diagnostic module (SDM) electrical connector.
  2. Check for a short to ground between terminal 3 of connector C214 and terminal 5 of the SDM connector.
Is the wiring harness shorted to ground?		 - Go to Step 15  Go to Step 8 
8 Use an ohmmeter to check for continuity between the DLC terminal and ground.
Does the ohmmeter show the specified value?		 0 Ω Go to Step 9  Go to Step 10 
9 Repair the open DLC ground circuit.
Is the repair complete?		 - System OK -
10
  1. Turn on the ignition, with the engine OFF.
  2. Check the voltage at the cigar lighter positive terminal.
Does the voltmeter show the specified value?		 11-14 V Go to Step 12  Go to Step 11 
11 Repair the power supply for the cigar lighter socket.
Is the repair complete?		 - System OK -
12 Check for a short to ground or an open circuit between the DLC terminal and terminal 4 of connector C214.
Is the wiring harness shorted to ground or open?		 - Go to Step 13  Go to Step 14 
13 Repair a short to ground or open circuit between terminal J13 of the DLC and terminal 4 of connector C214.
Is the repair complete?		 - System OK -
14 Check for a short to ground or an open between terminal 4 of connector C214 and terminal 9 of the SDM connector.
Is the wiring harness shorted to ground or open?		 - Go to Step 15  Go to Step 16 
15 Replace the SDM wiring harness.
Is the repair complete?		 - System OK -
16 Replace the SDM.
Is the repair complete?		 - System OK -
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