( SMR7E00K732000Y1183FAAT00 )

DTC Troubleshooting: B1183

DTC B1183:

Gauge Control Module (Tach) Lost Communication with EPS Control Unit (EPS Message)

Clear the DTCs with the HDS.

Turn the ignition switch OFF, and then back ON (II).

Wait for 6 seconds or more.

Check for DTCs with the HDS.

Is DTC B1183 indicated?

YES	-	Go to Step 5 .
NO	-	Intermittent failure, the system is OK at this time. Check for loose or poor connections.■

Check for EPS system DTCs with the HDS.

Is any DTCs indicated?

YES	-	Go to the indicated DTCs, then recheck.
NO	-	Go to Step 6 .

Turn the ignition switch OFF.

Disconnect the gauge control module (tach) 36P connector.

Disconnect the EPS control unit connector C (28P).

Connect the gauge control module (tach) 36P connector No. 1 and No. 19 terminals and body ground with jumper wires.

Check for continuity between the EPS control unit connector C (28P) No. 1 and No. 15 terminals and body ground individually.

Are there continuity?

YES	-	Substitute a known-good EPS control unit, and recheck. If the indication goes away, replace the original EPS control unit. If the DTC is still present, replace the gauge control module (tach). ■
NO	-	Repair an open in the wire.■