Go to step 5.
NO -
Intermittent failure, the system is OK at this time.?
5. Turn the ignition switch to LOCK (0).
6. Disconnect driver's MPCS unit connector A (40P).
7. Disconnect front passenger's MPCS unit connector A (28P).
8. Check for continuity between driver's MPCS unit connector A (40P) terminal No. 8 and front passenger's MPCS unit connector A (28P)
terminal No. 4.
Is there continuity?
YES -
Substitute a known-good driver's MPCS unit and recheck. If the DTC goes away, replace the original driver's MPCS unit. If the DTC is still
present, replace the front passenger's MPCS unit.
NO -
Repair an open in the wire.?
B2189
DTC Troubleshooting: B2189
DTC B2189:
Driver's Window Position Data Error
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. Open and close the driver's power window by using the power window master switch manually.
4. Check for DTCs with the HDS.
Is DTC B2175 or B2176 also indicated?
YES -
Go to the indicated DTC(s) troubleshooting.?
NO -
Go to step 5.
5. Reset the power window control unit See: Relays and Modules/Relays and Modules - Windows and Glass/Power Window Control
