Honda Accord 2008 Manual page 2357

07/11/02 09:41:45 61TA0000_220_0327
Gauges
DTC Troubleshooting (cont'd)
DTC U0122: Gauge Control Module Lost
Communication with VSA Modulator-Control
Unit (VSA message)
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-120).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back
to ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.
Is DT C U0122 indicated?
YES − Go to step 5.
−
NO Intermittent failure, the F-CAN
communication line is OK at this time. Check for
DTCs in the ECM/PCM and the VSA modulator-
control unit with the HDS. If F-CAN DTCs are
present, check for a loose VSA ground or poor
connections at the VSA modulator-control unit or
gauge control module. If the connections are good,
check the battery condition and the charging
system, then clear all DTCs.
5. Check for DTCs in the ECM/PCM or VSA with the
HDS.
Are any DT Cs indicated?
YES − Go to the ECM/PCM or VSA indicated DTC's,
troubleshooting.
−
NO Go to step 6.
6. Do the gauge control module input test.
Are all inputs OK ?
−
YES Go to step 7.
NO − Repair the faulty input, then recheck the
DTCs.
22-324
7. Substitute a known-good gauge control module.
8. Clear the DTCs with the HDS.
9. Turn the ignition switch to LOCK (0) and then back
to ON (II).
10. Check for DTCs with the HDS.
Is DT C U0122 indicated?
YES − Recheck ECM/PCM for DTCs, then recheck
the VSA modulator-control unit for DTCs.
−
NO The original gauge control module is faulty;
replace it.
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