Diagnostic System Check - Real Time Damping - JustAnswer
Diagnostic System Check - Real Time Damping - JustAnswer
Diagnostic System Check - Real Time Damping - JustAnswer
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Document ID: 643977<br />
http://gsi.xw.gm.com/si/cellHandler.do?cellId=55478&refDoc=644194&from=sm<br />
Page 1 of 3<br />
7/17/2009<br />
2001 GMC Truck Yukon XL - 4WD | Sierra, Silverado, Suburban, Tahoe, Yukon (VIN C/K) Service Manual | Suspension |<br />
<strong>Real</strong> <strong>Time</strong> <strong>Damping</strong> (RTD) | <strong>Diagnostic</strong> Information and Procedures | Document ID: 643977<br />
<strong>Diagnostic</strong> <strong>System</strong> <strong>Check</strong> - <strong>Real</strong> <strong>Time</strong> <strong>Damping</strong><br />
Test Description<br />
The number(s) below refer to the step number(s) on the diagnostic table.<br />
2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit<br />
or due to a total malfunction of the class 2 serial data circuit. The specified procedure will<br />
determine the particular condition.<br />
3. <strong>Check</strong> for the presence of DTCs.<br />
4. The presence of DTCs which begin with "U" indicate some other module is not<br />
communicating. The specified procedure will compile all the available information before tests<br />
are performed.<br />
5. <strong>Check</strong> for the presence of DTCs.<br />
Step Action Yes No<br />
1<br />
2<br />
3<br />
4<br />
5<br />
Install a scan tool.<br />
Does the scan tool power up? Go to Step 2<br />
1. Turn ON the ignition, with the<br />
engine OFF.<br />
2. Attempt to establish<br />
communication with the<br />
Suspension (RTD) Control<br />
module, Instrument Cluster<br />
(IPC) and the Powertrain<br />
Control Module (PCM).<br />
Does the scan tool communicate<br />
with each of the Modules? Go to Step 3<br />
Select the display DTCs function on<br />
the scan tool<br />
Does the scan tool display any DTCs<br />
which begin with a "U"?<br />
Select the Powertrain Control<br />
module display DTCs function on<br />
the scan tool.<br />
Does the scan tool display any DTCs<br />
for VSS, TP Sensor or <strong>System</strong><br />
Voltage?<br />
Go to Scan Tool Does<br />
Not Power Up in Data<br />
Link Communications<br />
Go to Scan Tool Does<br />
Not Communicate with<br />
Class 2 Device in Data<br />
Link Communications<br />
Go to Scan Tool Does<br />
Not Communicate with<br />
Class 2 Device in Data<br />
Link Communications Go to Step 4<br />
Go to <strong>Diagnostic</strong> Trouble<br />
Code (DTC) List in<br />
Engine Controls Go to Step 5<br />
Select the Suspension Control<br />
module display DTCs function on<br />
the scan tool.<br />
© 2009 General Motors Corporation. All rights reserved.
Document ID: 643977<br />
http://gsi.xw.gm.com/si/cellHandler.do?cellId=55478&refDoc=644194&from=sm<br />
Page 2 of 3<br />
7/17/2009<br />
Does the scan tool display any<br />
DTCs? Go to Step 6<br />
1. Start the engine.<br />
2. Use the scan tool in order to<br />
clear the DTCs.<br />
Go to Symptoms - <strong>Real</strong><br />
<strong>Time</strong> <strong>Damping</strong><br />
Important: Do not turn the<br />
ignition OFF after clearing the<br />
DTCs.<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
3. With the scan tool, command<br />
all the dampers ON and OFF 5<br />
times or for 1 minute.<br />
4. Road test vehicle.<br />
5. Select the the Suspension<br />
Control module display DTCs<br />
function on the scan tool.<br />
Does the scan tool display any<br />
DTCs? Go to Step 7 <strong>System</strong> OK<br />
Does the scan tool display DTC<br />
C0550 or C0551?<br />
Go to <strong>Diagnostic</strong> Trouble<br />
Code (DTC) List Go to Step 8<br />
Does the scan tool display DTC<br />
C0870? Go to DTC C0870 Go to Step 9<br />
Does the scan tool display all of the<br />
following DTCs C0575, C0580,<br />
C0585 and C0590? Go to DTC C0690 Go to Step 10<br />
Does the scan tool display any of<br />
the following DTCs C0575, C0580,<br />
C0585 or C0590? Go to Step 11<br />
1. Visual inspect the electrical<br />
connections at the suspect<br />
shock.<br />
2. Disconnect the shock<br />
electrical connector of the<br />
suspect shock and inspect the<br />
connector.<br />
3. Re-connect the connector.<br />
Important: Do not turn the<br />
ignition OFF after clearing the<br />
DTCs.<br />
Go to <strong>Diagnostic</strong> Trouble<br />
Code (DTC) List<br />
4. Use the scan tool in order to<br />
clear the DTCs.<br />
5. With the scan tool, command<br />
all the dampers ON and OFF 5<br />
times or for 1 minute.<br />
6. Select the the Suspension<br />
Control module display DTCs<br />
function on the scan tool.<br />
Go to <strong>Diagnostic</strong> Trouble Go to Symptoms - <strong>Real</strong>
Document ID: 643977<br />
http://gsi.xw.gm.com/si/cellHandler.do?cellId=55478&refDoc=644194&from=sm<br />
Page 3 of 3<br />
7/17/2009<br />
Does the DTC reset? Code (DTC) List <strong>Time</strong> <strong>Damping</strong>
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