Contents Section: Electronic Steering All sections

Electronic Power Steering (Eps): Diagnosis Mazda 2 II рестайлинг

Electronic Steering 3 illustrations ~438 words

Play inspection

  1. With the wheels in the straight-ahead position, start the engine.
  2. Turn the steering wheel to the left and right gently, then verify that the steering wheel play is within the specification. Steering wheel play 0.0-30 mm {0.0-1.1 in}

Scheme 6

Scheme 6: Looseness, Excessive Play Inspection
  1. Inspect the steering wheel for looseness or excessive play in the axial direction of the shaft and four locations around the steering wheel. (Scheme 6): Inspecting Steering Wheel For Looseness Or Excessive Play In Axial Direction Of Shaft If there is any malfunction, inspect the following, and repair or replace the applicable part. Column bearing wear Looseness of the steering wheel installation part Looseness of the column installation area Excessive play in the intermediate shaft joint Excessive play in the steering gear

Scheme 7

Scheme 7: Steering Force Inspection
  1. Verify that the equipped tire size and tire air pressure is as specified.
  2. With the vehicle on a hard, level surface, put the wheels in the straight-ahead position.
  3. Remove the driver-side air bag module. (See «DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION»(ref-517434-S24290337822012121200000).) WARNING: Handling the air bag module improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings and cautions before handling the air bag module. (See «AIR BAG SYSTEM SERVICE WARNINGS»(ref-517434-S35063875162012121200000).) (See «AIR BAG SYSTEM SERVICE CAUTIONS»(ref-517434-S12092531102012121200000).)
  4. Start the engine and idle it.
  5. Verify that the EPS warning light is not illuminated or flashing.
  6. Inspect the steering torque using a torque wrench. (Scheme 7): Inspecting Steering Torque Using Torque Wrench If it exceeds the reference value, inspect the steering gear and linkage. (See «STEERING GEAR AND LINKAGE INSPECTION»(ref-517483-S41867072432012121200000).) Steering wheel steering force (reference) 7.8 N.m {80 kgf.cm, 69 in.lbf} or less

Note. Comparing another vehicle of the same model under the same conditions is an acceptable inspection method. The steering torque varies with the conditions indicated below. Road conditions: Such as dry, wet, asphalt, or concrete Tire condition: Such as brand, wear, and tire pressure

EPS CONTROL MODULE INSPECTION

  1. Remove the side wall. (See «SIDE WALL REMOVAL/INSTALLATION»(ref-517497-S42051367322012121200000) .)
  2. Remove the front console component. (See «FRONT CONSOLE COMPONENT REMOVAL/INSTALLATION»(ref-517497-S35138574242012121200000) .)
  3. Remove the front scuff plate (LH) and front side trim (LH). (See «FRONT SCUFF PLATE REMOVAL/INSTALLATION»(ref-517497-S16065429912012121200000) .) (See «FRONT SIDE TRIM REMOVAL/INSTALLATION»(ref-517497-S41539597602012121200000) .)
  4. Disconnect the hood release lever from the lower panel. (See «HOOD LATCH AND RELEASE LEVER REMOVAL/INSTALLATION»(ref-517460-S14332073362012121200000) .)
  5. Remove the lower panel. (See «LOWER PANEL REMOVAL/INSTALLATION»(ref-517497-S40475635322012121200000) .)
  6. Remove the heat duct (LH). (See «HEAT DUCT COMPONENT REMOVAL/INSTALLATION»(ref-517465-S38916655892012121200000) .)
  7. Attach the tester lead to the underside of the EPS CM connector and inspect the voltage according to the terminal voltage table (reference).

Identifying EPS Control Module Harness-Side Connector. Scheme 8

Scheme 8: Identifying EPS Control Module Harness-Side Connector
TerminalSignal nameInput/outputConnected toMeasured itemMeasured terminal (measurement condition)Voltage (V)Inspection item(s)
1A
1B
1D
1FIgnition power supplyInputIgnition switchVoltageSwitch the ignition to ONB+Wiring harness (1F-ignition switch) Fuse (10 A)
Switch the ignition to off1 or less
1GCAN_HInput <--> OutputPerform DTC inspection
1HCAN_LInput <--> OutputPerform DTC inspection
2AGroundGround pointVoltageUnder any condition1 or lessWiring harness (2A-ground point)
3ABattery power supplyInputBatteryVoltageUnder any conditionB+Wiring harness (3A-battery) Fuse (60A)