LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2005 >> Aveo Base, 4D Hatchback >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnostic Information and Procedures >> DTC 025 >> Diagnostic Aids

Diagnostic Aids

When the ignition switch is turned ON, the warning lamp blinks 7 times during 7 seconds.

If the warning lamp stays ON or blinks a second after the normal blinking, 7 times during 7 seconds, then it is regarded as a defect, old or current. Please inspect the defect with a scan tool.

DTC 025

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 Perform the Diagnostic System Check - SIR.
Is the Diagnostic System Check - SIR complete?		 - Go to Step 2  Go to Diagnostic System Check - SIR 
2 Turn the ignition ON.
Is the warning lamp constantly ON?		 - Go to Step 3  Go to Step 10 
3 Make sure the sensing and diagnostic module (SDM) connector is attached correctly.
Does the warning lamp turn OFF?		 - Go to Diagnostic System Check - SIR  Go to Step 4 
4
  1. Inspect for indications of a diagnostic trouble code (DTC) other than code 025.
  2. Go to the appropriate DTC charts and repair each additional problem.
  3. Perform the Diagnostic System Check - SIR .
Does the scan tool still indicate the DTC 025?		 - Go to Step 5  System OK
5 Inspect for a short to ground between the SDM and the warning lamp using the following method:
  1. Turn the ignition OFF.
  2. Disconnect the connector C214.
  3. Connect 1 ohmmeter lead to ground.
  4. Touch the other ohmmeter lead to the terminal 3 of the connector C214 on the instrument harness side.

Does the ohmmeter indicate the specified value?		 infinity Go to Step 7  Go to Step 6 
6 Repair the short to ground in the instrument harness.
Is the repair complete?		 - Go to Diagnostic System Check - SIR  -
7
  1. The connector C214 remains disconnected.
  2. One lead of the ohmmeter remains connected to ground.
  3. Move the ohmmeter lead at the connector C214 to the SDM side of the connector.
Does the ohmmeter indicate the specified value?		 infinity Go to Step 8  Go to Step 9 
8 Replace the SDM.
Is the repair complete?		 - Go to Diagnostic System Check - SIR  -
9
  1. Disconnect the negative battery cable.
  2. Replace the SIR wiring harness.
  3. Perform the Diagnostic System Check - SIR .
Is DTC 025 still shown?		 - Go to Step 6  System OK
10 Inspect the fuse F4.
Is fuse F4 open?		 - Go to Step 11  Go to Step 12 
11
  1. With the connector C214 temporarily disconnected, inspect for a short to ground between the fuse F4 and the warning lamp.
  2. Make a repair, if needed.
  3. Replace fuse F4.
Is the repair complete?		 - Go to Diagnostic System Check - SIR  -
12
  1. Turn the ignition ON.
  2. Using a multimeter, measure the voltage at fuse F4.
Does the multimeter show the specified value?		 11-14 V Go to Step 14  Go to Step 13 
13 Repair the open power supply circuit for the fuse F4.
Is the repair complete?		 - Go to Diagnostic System Check - SIR  -
14
  1. Disconnect the connector C214.
  2. Turn the ignition ON.
  3. Using a multimeter, measure the voltage on the instrument harness side of the terminal 1 of the connector C214.
Does the multimeter show the specified value?		 11-14 V Go to Step 16  Go to Step 15 
15
  1. Inspect the warning lamp bulb.
  2. Replace the warning lamp bulb, if needed.
  3. If the bulb is good, repair the open circuit between the fuse F4 and the terminal 1 of the connector C214.
Is the repair complete?		 - Go to Diagnostic System Check - SIR  -
16
  1. Disconnect the negative battery terminal.
  2. Wait at least 1 minute before proceeding.
  3. Replace the SIR wiring harness.
Is the repair complete?		 - System OK -
scientia non olet · About LEMON Manuals