Is there continuity?
YES -
Update the PCM if it does not have the latest software See: Powertrain Management/Computers and Control Systems/Engine Control
Module/Testing and Inspection/Programming and Relearning/PCM Update, or substitute a known-good PCM, and recheck. If the indication goes
away, replace the original PCM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and Repair. If the
DTC is still present, replace the gauge control module See: Instrument Panel, Gauges and Warning Indicators/Instrument Cluster / Carrier/Service
and Repair.?
NO -
Repair an open in the wire.?
B1170
DTC Troubleshooting: B1170
DTC B1170:
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: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/Troubleshooting
- B-CAN System Diagnosis Test Mode A.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Is DTC B1170 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connection between the gauge control module and the VSA
modulator-control unit.?
5. Check for VSA System DTCs with the HDS.
Are there any DTCs indicated?
