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Transfer: Diagnosis Infiniti M45 III рестайлинг

Transfer Case 8 illustrations ~3217 words

DTC INDEX

DTCDescription
DTC C1201CONTROLLER FAILER
DTC C1203ABS SYSTEM
DTC C1204AWD SOLENOID
DTC C1205AWD ACTUATOR RELAY
DTC C1210ENGINE CONTROL SIGNAL
DTC U1000CAN COMMUNICATION LINE
DTC U1010CONTROL UNIT (CAN)

DTC INDEX

NVH Troubleshooting Chart

Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspection. If necessary, repair or replace these parts.

Scheme 11

Scheme 11: NVH Troubleshooting Chart
Scheme 11: NVH Troubleshooting Chart

Scheme 12

Scheme 12: DRAINING
Scheme 12: DRAINING
  1. Run the vehicle to warm up the transfer unit sufficiently.
  2. Stop the engine, and remove the drain plug to drain the transfer fluid. CAUTION: When draining fluid, protect exhaust tube flange with cover.
  3. Apply sealant to drain plug. Install drain plug on transfer and tighten to the specified torque. Refer to " «DISASSEMBLY AND ASSEMBLY»(ref-356285-S00237368472010021300000) ". Use Genuine Silicone RTV or equivalent. Refer to " «RECOMMENDED CHEMICAL PRODUCT AND SEALANT»(ref-356247-S32913053182010021300000) ". CAUTION: Remove old sealant adhering to mounting surfaces. Also remove any moisture, oil, or foreign material adhering to application and mounting surfaces.

Scheme 13

Scheme 13: FILLING
Scheme 13: FILLING
  1. Remove filler plug and add transfer fluid until fluid level reaches the specified limit near filler plug mounting hole. Fluid capacity : Approx. 1.25 l (2-5/8 US pt, 2-1/4 lmp pt) CAUTION: Carefully fill the fluid. (Fill up for approx. 3 minutes.)
  2. Leave the vehicle for 3 minutes, and check the fluid level again.
  3. Set a new gasket onto filler plug and install it on transfer and tighten to the specified torque. Refer to " «DISASSEMBLY AND ASSEMBLY»(ref-356285-S00237368472010021300000) ". CAUTION: Do not reuse gasket.

Trouble Diagnosis Chart by Symptom

If AWD warning lamp turns ON, perform self-diagnosis. Refer to " CONSULT-III FUNCTION (ALL MODE AWD/4WD) ".

SymptomConditionCheck itemReference Procedure
AWD warning lamp does not turn ON when the ignition switch is turned to ON. (AWD warning lamp check)Ignition switch: ONCAN communication lineAWD WARNING LAMP DOES NOT TURN ON WHEN THE IGNITION SWITCH IS TURNED TO ON
Unified meter and A/C amp.
Unified meter control unit
AWD warning lamp does not turn OFF several seconds after engine started.Engine runningCAN communication lineAWD WARNING LAMP DOES NOT TURN ON WHEN THE IGNITION SWITCH IS TURNED TO ON
Power supply and ground for AWD control unit
Unified meter and A/C amp.
Unified meter control unit
AWD solenoid
AWD actuator relay (integrated in AWD control unit)
Wheel sensor
Heavy tight-corner braking symptom occurs when the vehicle is driven and the steering wheel is turned fully to either side after the engine is started.While driving Steering wheel is turned fully to either sidesCAN communication lineHEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS WHEN THE VEHICLE IS DRIVEN AND THE STEERING WHEEL IS TURNED FULLY TO EITHER SIDE AFTER THE ENGINE IS STARTED
Accelerator pedal position signal
AWD solenoid
Mechanical malfunction of electric controlled coupling (clutch sticking etc.)
Vehicle does not enter AWD mode even though AWD warning lamp turned to OFF.While drivingCAN communication lineVEHICLE DOES NOT ENTER AWD MODE EVEN THOUGH AWD WARNING LAMP TURNED TO OFF
AWD solenoid
Mechanical malfunction of electric controlled coupling (Mechanical engagement of clutch is not possible.)
While driving, AWD warning lamp flashes rapidly. (When flashing in approx. 1 minute and then turning OFF.) Rapid flashing: 2 times/secondWhile drivingProtection function is activated due to heavy load to electric controlled coupling. (AWD system is not malfunctioning. Also, optional distribution of torque sometimes becomes rigid before lamp flashes rapidly, but it is not malfunction.)VEHICLE DOES NOT ENTER AWD MODE EVEN THOUGH AWD WARNING LAMP TURNED TO OFF
While driving, AWD warning lamp flashes slowly. (When continuing to flash until turning ignition switch OFF) Slow flashing: 1 time/2 secondsWhile driving Vehicle speed: 20 km/h (12 MPH) or moreTire size is different between front and rear of vehicle.VEHICLE DOES NOT ENTER AWD MODE EVEN THOUGH AWD WARNING LAMP TURNED TO OFF

TROUBLE DIAGNOSIS SYMPTOMS CHART

Note. Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunction.

AWD CONTROL UNIT INSPECTION TABLE

Specifications with CONSULT-III

Monitor item [Unit]ContentConditionDisplay value
FR RH SENSOR [km/h] or [mph]Wheel speed (Front wheel right)Vehicle stopped0.00 km/h (0.00 mph)
Vehicle running CAUTION: Check air pressure of tire under standard condition.Approximately equal to the indication on speedometer (Inside of ±10%)
FR LH SENSOR [km/h] or [mph]Wheel speed (Front wheel left)Vehicle stopped0.00 km/h (0.00 mph)
Vehicle running CAUTION: Check air pressure of tire under standard condition.Approximately equal to the indication on speedometer (Inside of ±10%)
RR RH SENSOR [km/h] or [mph]Wheel speed (Rear wheel right)Vehicle stopped0.00 km/h (0.00 mph)
Vehicle running CAUTION: Check air pressure of tire under standard condition.Approximately equal to the indication on speedometer (Inside of ±10%)
RR LH SENSOR [km/h] or [mph]Wheel speed (Rear wheel left)Vehicle stopped0.00 km/h (0.00 mph)
Vehicle running CAUTION: Check air pressure of tire under standard condition.Approximately equal to the indication on speedometer (Inside of ±10%)
BATTERY VOLT [V]Power supply voltage for AWD control unitIgnition switch: ONBattery voltage
THRTL POS SEN [%]Throttle opening conditionWhen depressing accelerator pedal (Value rises gradually in response to throttle position.)0 - 100%
ETS SOLENOID [A]Monitored value of current at AWD solenoidEngine running At idle speedApprox. 0.000A
Engine running When depressing accelerator pedalApprox. 0.000 - 0.500A (1)
STOP LAMP SW [ON/OFF]Condition of brake pedal operationBrake pedal: DepressedOn
Brake pedal: ReleasedOff
ENG SPEED SIG [RUN/STOP]Condition of engine runningEngine stopped (Engine speed: Less than 400 rpm)STOP
Engine running (Engine speed: 400 rpm or more)RUN
ETS ACTUATOR [ON/OFF]Operating condition of AWD actuator relay (integrated in AWD control unit)Engine stopped (Ignition switch: ON)Off
Engine runningOn
4WD WARN LAMP [ON/OFF]AWD warning lamp conditionAWD warning lamp: ONOn
AWD warning lamp: OFFOff
4WD MODE SW (2) [AUTO]Input condition from mode switchAlwaysAUTO
4WD MODE MON [AUTO]Control status of AWDEngine runningAUTO
DIS-TIRE MONI [mm]Improper size tire installed conditionVehicle running with normal size tire installed0-4 mm
Vehicle running with improper size tire installed (Front/rear tire size difference, wear condition)4-8 mm, 8- mm
P BRAKE SW [ON/OFF]Condition of parking brakeParking brake operatedOn
Parking brake not operatedOff
(1) The values are changed by throttle opening and engine speed. (2) Mode switch is not equipped, but displayed.
CAUTION
Check air pressure of tire under standard condition.
CAUTION
Check air pressure of tire under standard condition.
CAUTION
Check air pressure of tire under standard condition.
CAUTION
Check air pressure of tire under standard condition.
(1)The values are changed by throttle opening and engine speed.
(2)Mode switch is not equipped, but displayed.

AWD CONTROL UNIT INSPECTION CHART

ACTIVE TEST MODE

Description

Use this mode to determine and identify the details of a malfunction based on self-diagnostic results or data monitor. AWD control unit gives drive signal to actuator with receiving command from CONSULT-III to check operation of actuator.

Test Item

Test itemConditionDescription
ETS S/V (Detects AWD solenoid)Vehicle stopped Engine running No DTC detectedChange command current value to AWD solenoid, and then change driving mode. (Monitor value is normal if it is within approximately ±10% of command value.) Qu: Increase current value in increments of 0.20A Qd: Decrease current value in increments of 0.20A UP: Increase current value in increments of 0.02A DOWN: Decrease current value in increments of 0.02A

ACTIVE TEST MODE REFERENCE CHART

CAUTIONDo not continuously energize for a long time.

DIAGNOSTIC PROCEDURE

  1. Check the following if "CONTROLLER FAILURE [C1201]" is displayed in self-diagnosis results of CONSULT-III.
  1. PERFORM SELF-DIAGNOSIS With CONSULT-III Turn ignition switch "ON". (Do not start engine.) Select "SELF-DIAG RESULTS" mode for "ALL MODE AWD/4WD" with CONSULT-III. Touch "ERASE". Turn ignition switch "OFF" and wait at least 10 seconds. Perform the self-diagnosis again. Is the "CONTROLLER FAILURE [C1201]" displayed? YES: Replace AWD control unit. Refer to «AWD CONTROL UNIT»(ref-356285-S21468064942010021300000) . NO: INSPECTION END
  1. Check the following if "ABS SYSTEM [C1203]" is displayed in self-diagnosis results of CONSULT-III.
  1. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to " «CONSULT-III FUNCTION (ABS)»(ref-356279-S01858918472010021300000) ". Is any malfunction detected by self-diagnosis? YES: Check the malfunctioning system. NO: GO TO 2.
  2. CHECK DTC AFTER DRIVING Turn ignition switch "OFF". Start engine and drive vehicle at 30 km/h (19 MPH) for at least 1 minute. Make sure that ABS warning lamp turns OFF. Perform erase self-diagnosis results. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-356285-S28893242402010021300000) ". Stop vehicle and turn ignition switch "OFF". Turn ignition switch "ON". Perform self-diagnosis. Is the "ABS SYSTEM [C1203]" displayed? YES: GO TO 3. NO: INSPECTION END
  3. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: GO TO 4. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  4. CHECK DTC Perform the self-diagnosis, after driving a vehicle for a while. OK or NG OK: INSPECTION END NG: Perform self-diagnosis with ABS actuator and electric unit (control unit) again. Refer to " «CONSULT-III FUNCTION (ABS)»(ref-356279-S01858918472010021300000) ".
  1. Check the following if "4WD SOLENOID [C1204]" is displayed in self-diagnosis results of CONSULT-III.
  1. CHECK AWD SOLENOID SIGNAL With CONSULT-III Start engine. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-III. Read out the value of "ETS SOLENOID". DATA MONITOR MODE REFERENCE CHART Condition Display value Engine running At idle speed Approx. 0.000A When depressing accelerator pedal Approx. 0.000 - 0.500A (1) (1) The values are changed by throttle opening and engine speed. OK or NG OK: GO TO 6 . NG: GO TO 2.
  2. CHECK POWER SUPPLY Turn ignition switch "OFF". Disconnect AWD control unit harness connector. Turn ignition switch "ON".(Do not start engine.) Check voltage between AWD control unit harness connector terminal 9 and ground. VOLTAGE REFERENCE CHART Connector Terminal Voltage (Approx.) F109 9 - Ground Battery voltage OK or NG OK: GO TO 3. NG: Check the following. If any items are damaged, repair or replace damaged parts. 10A fuse [No. 33, located in the fuse block (J/B)] Harness for short or open between battery and AWD control unit harness connector terminal 9
  3. CHECK AWD SOLENOID CIRCUIT Turn ignition switch "OFF". Disconnect AWD control unit harness connector. Check resistance between AWD control unit harness connector terminals 1 and 2. RESISTANCE REFERENCE CHART Connector Terminal Resistance (Approx.) F109 1 - 2 (Ground) 2.45 ohms OK or NG OK: GO TO 6 . NG: GO TO 4.
  4. CHECK AWD SOLENOID Turn ignition switch "OFF". Disconnect transfer assembly harness connector. Check resistance between transfer assembly harness connector F43 terminals 1 and 2. 1 - 2 : Approx. 2.45ohms OK or NG OK: GO TO 5. NG: AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to " «DISASSEMBLY AND ASSEMBLY»(ref-356285-S00237368472010021300000) ".
  5. CHECK HARNESS BETWEEN AWD CONTROL UNIT AND AWD SOLENOID Turn ignition switch "OFF". Disconnect AWD control unit harness connector and transfer assembly harness connector. Check continuity between the following terminals. AWD control unit harness connector F109 terminal 1 and transfer assembly harness connector F43 terminal 1. AWD control unit harness connector F109 terminal 2 and transfer assembly harness connector F43 terminal 2. 1 - 1 : Continuity should exist . 2 - 2 : Continuity should exist . Also check harness for short to ground and short to power. OK or NG OK: GO TO 6. NG: Repair or replace damaged parts.
  6. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: GO TO 7. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  7. CHECK DTC Perform the self-diagnosis, after driving a vehicle for a while. OK or NG OK: INSPECTION END NG: Replace AWD control unit.

COMPONENT INSPECTION

  1. Turn ignition switch "OFF".
  2. Disconnect transfer assembly harness connector.
  3. Check resistance between transfer assembly harness connector F43 terminals 1 and 2. 1 - 2 : Approx. 2.45ohms
  4. If NG, replace electric controlled coupling. Refer to " «DISASSEMBLY AND ASSEMBLY»(ref-356285-S00237368472010021300000) ".
  1. Check the following if "4WD ACTUATOR RLY [C1205]" is displayed in self-diagnosis results of CONSULT-III.
  1. CHECK AWD SOLENOID SYSTEM Perform self-diagnosis. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-356285-S28893242402010021300000) ". Is the "4WD SOLENOID [C1204]" displayed? YES: Perform trouble diagnosis for AWD solenoid. Refer to " «DTC C1204 AWD SOLENOID»(ref-356285-S42868806382010021300000) ". NO: GO TO 2.
  2. CHECK AWD ACTUATOR RELAY SIGNAL With CONSULT-III Turn ignition switch "ON".(Do not start engine.) Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-III. Start engine and read out ON/OFF signal of "ETS ACTUATOR". DATA MONITOR MODE REFERENCE CHART Monitor item Condition Display value ETS ACTUATOR Engine stopped (Ignition switch: ON) Off Engine running On OK or NG OK: GO TO 4 . NG: GO TO 3.
  3. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: GO TO 4. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  4. CHECK DTC Perform the self-diagnosis, after driving a vehicle for a while. OK or NG OK: INSPECTION END NG: Replace AWD control unit.
  1. Check the following if "ECM SIGNAL 1 [C1210]" is displayed in self-diagnosis results of CONSULT-III.
  1. CHECK DTC WITH ECM Perform self-diagnosis with ECM. Is any malfunction detected by self-diagnosis? YES: Check the malfunctioning system. NO: GO TO 2.
  2. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: GO TO 3. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  3. CHECK DTC Perform the self-diagnosis, after driving a vehicle for a while. OK or NG OK: INSPECTION END NG: Perform self-diagnosis with ECM again.
  1. Check the following if "CAN COMM CIRCUIT [U1000]" is detected in self-diagnosis results of CONSULT-III.
  1. CHECK CAN COMMUNICATION CIRCUIT With CONSULT-III Turn ignition switch "ON" and start engine. Select "SELF-DIAG RESULTS" mode for "ALL MODE AWD/4WD" with in CONSULT-III. Perform the self-diagnosis. Is the "CAN COMM CIRCUIT [U1000]" displayed? YES: Print out CONSULT-III screen and go to " «CAN SYSTEM SPECIFICATION CHART»(ref-356252-S23495326882010021300000) ". NO: INSPECTION END
  1. Check the following if "CONTROL UNIT (CAN) [U1010]" is detected in self-diagnosis results of CONSULT-III.
  1. CHECK 4WD CONTROL UNIT Check 4WD control unit harness connector for siaconnection and deformation. Is the inspection result normal? YES: Replace 4WD control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-356285-S37654496302010021300000) ". NO: Repair or replace error-detected parts.
  1. CHECK POWER SUPPLY Turn ignition switch "OFF". Disconnect AWD control unit harness connector. Turn ignition switch "ON". (Do not start engine.) Check voltage between AWD control unit harness connector terminals and ground. VOLTAGE REFERENCE CHART Connector Terminal Voltage (Approx.) F109 7 - Ground Battery voltage 9 - Ground Turn ignition switch "OFF". Check voltage between AWD control unit harness connector terminals and ground. VOLTAGE REFERENCE CHART Connector Terminal Voltage (Approx.) F109 7 - Ground 0V 9 - Ground Battery voltage OK or NG OK: GO TO 2. NG: Check the following. If any items are damaged, repair or replace damaged parts. 10A fuse [No. 33, located in the fuse block (J/B)] 10A fuse [No. 82, located in the IPDM E/R] Harness for short or open between battery and AWD control unit harness connector terminal 9 Harness for short or open between ignition switch and AWD control unit harness connector terminal 7 Ignition switch. Refer to «POWER SUPPLY ROUTING CIRCUIT»(ref-356251-S30176069042010021300000) .
  2. CHECK GROUND CIRCUIT Turn ignition switch "OFF". Disconnect AWD control unit harness connector. Check continuity between AWD control unit harness connector F109 terminals 10, 11 and ground. Continuity should exist . Also check harness for short to ground and short to power. OK or NG OK: GO TO 3. NG: Repair open circuit or short to ground or short to power in harness or connectors.
  3. CHECK DTC Start engine. Does AWD warning lamp turn OFF? YES: INSPECTION END NO: Perform the self-diagnosis, repair or replace damaged parts. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-356285-S28893242402010021300000) ".
  1. CHECK SYSTEM FOR CAN COMMUNICATION LINE Perform self-diagnosis. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-356285-S28893242402010021300000) ". Is the "CAN COMM CIRCUIT [U1000]" displayed? YES: Perform trouble diagnosis for CAN communication line. Refer to " «DTC U1000 CAN COMMUNICATION LINE»(ref-356285-S13574650372010021300000) ". NO: GO TO 2.
  2. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: GO TO 3. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  3. CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP. With CONSULT-III Turn ignition switch "ON". (Do not start engine.) Select "DATA MONITOR" mode for "METER A/C AMP" with CONSULT-III. Start the engine, and then make sure that "4WD W/L" display turns from "ON" to "OFF" after several seconds. DATA MONITOR MODE REFERENCE CHART Monitor item Condition Display value 4WD W/L Ignition switch ON On Start engine (after several seconds) Off OK or NG OK: GO TO 4. NG: Perform trouble diagnosis for combination meter. Refer to " «TROUBLE DIAGNOSIS»(ref-356277-S03405221402010021300000) ".
  4. SYMPTOM CHECK Check again. OK or NG OK: INSPECTION END NG: Replace unified meter control unit assembly. Refer to " «DISASSEMBLY AND ASSEMBLY OF COMBINATION METER»(ref-356277-S38209955722010021300000) ".
  1. CHECK SELF-DIAGNOSTIC RESULTS Perform self-diagnosis. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-356285-S28893242402010021300000) ". Is any malfunction detected by self-diagnosis? YES: Check the malfunctioning system. NO: GO TO 2.
  2. CHECK AWD CONTROL UNIT POWER SUPPLY CIRCUIT Turn ignition switch "OFF". Disconnect AWD control unit harness connector. Turn ignition switch "ON". (Do not start engine.) Check voltage between AWD control unit harness connector terminals and ground. VOLTAGE REFERENCE CHART Connector Terminal Voltage (Approx.) F109 7 - Ground Battery voltage 9 - Ground Turn ignition switch "OFF". Check voltage between AWD control unit harness connector terminals and ground. VOLTAGE REFERENCE CHART Connector Terminal Voltage (Approx.) F109 7 - Ground 0V 9 - Ground Battery voltage OK or NG OK: GO TO 3. NG: Check the following. If any items are damaged, repair or replace damaged parts. 10A fuse [No. 33, located in the fuse block (J/B)] 10A fuse [No. 82, located in the IPDM E/R] Harness for short or open between battery and AWD control unit harness connector terminal 9 Harness for short or open between ignition switch and AWD control unit harness connector terminal 7 Ignition switch. Refer to " «CHECK IGNITION SWITCH POSITION»(ref-356276-S17240131482010021300000) ".
  3. CHECK AWD CONTROL UNIT GROUND CIRCUIT Turn ignition switch "OFF". Disconnect AWD control unit harness connector. Check continuity between AWD control unit harness connector F109 terminals 10, 11 and ground. Continuity should exist . Also check harness for short to ground and short to power. OK or NG OK: GO TO 4. NG: Repair open circuit or short to ground or short to power in harness or connectors.
  4. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: GO TO 5. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  5. CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP. With CONSULT-III Turn ignition switch "ON". (Do not start engine.) Select "DATA MONITOR" mode for "METER A/C AMP" with CONSULT-III. Start the engine, and then make sure that "4WD W/L" display turns from "ON" to "OFF" after several seconds. DATA MONITOR MODE REFERENCE CHART Monitor item Condition Display value 4WD W/L Ignition switch ON On Start engine (after several seconds) Off OK or NG OK: GO TO 6. NG: Perform trouble diagnosis for combination meter. Refer to " «TROUBLE DIAGNOSIS»(ref-356277-S03405221402010021300000) ".
  6. SYMPTOM CHECK Check again. OK or NG OK: INSPECTION END NG: Replace unified meter control unit assembly. Refer to " «DISASSEMBLY AND ASSEMBLY OF COMBINATION METER»(ref-356277-S38209955722010021300000) ".

Heavy Tight-Corner Braking Symptom Occurs When the Vehicle Is Driven and the Steering Wheel Is Turned Fully to Either Side after the Engine Is Started

Note. Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunction.

  1. CHECK SYSTEM FOR CAN COMMUNICATION LINE Perform self-diagnosis. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-356285-S28893242402010021300000) ". Is the "CAN COMM CIRCUIT [U1000]" displayed? YES: Perform trouble diagnosis for CAN communication line. Refer to " «DTC U1000 CAN COMMUNICATION LINE»(ref-356285-S13574650372010021300000) ". NO: GO TO 2.
  2. CHECK ACCELERATOR PEDAL POSITION SIGNAL CIRCUIT Perform self-diagnosis for ECM. Is any malfunction detected by self-diagnosis? YES: Check the malfunctioning system. NO: GO TO 3.
  3. CHECK SYSTEM FOR AWD SOLENOID Perform trouble diagnosis for AWD solenoid system. Refer to " «DTC C1204 AWD SOLENOID»(ref-356285-S42868806382010021300000) ". OK or NG OK: GO TO 4. NG: Repair or replace damaged parts.
  4. CHECK ELECTRIC CONTROLLED COUPLING Turn ignition switch "OFF". Set the selector lever to "N" (neutral) position and disengage the parking brake. Lift up the vehicle. Rotate the rear propeller shaft by hand. Hold front propeller shaft lightly. Does front propeller shaft rotate? YES: Replace electric controlled coupling for mechanical malfunction (clutch sticking etc.). Refer to " «DISASSEMBLY AND ASSEMBLY»(ref-356285-S00237368472010021300000) ". NO: GO TO 5.
  5. SYMPTOM CHECK Check again. OK or NG OK: INSPECTION END NG: GO TO 6.
  6. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: INSPECTION END NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  1. CHECK AWD WARNING LAMP Turn ignition switch "ON". (Do not start engine.) Does AWD warning lamp turn on? YES: GO TO 2. NO: Go to " «AWD WARNING LAMP DOES NOT TURN ON WHEN THE IGNITION SWITCH IS TURNED TO ON»(ref-356285-S17667104652010021300000) ".
  2. CHECK SYSTEM FOR CAN COMMUNICATION LINE Perform self-diagnosis. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-356285-S28893242402010021300000) ". Is the "CAN COMM CIRCUIT [U1000]" displayed? YES: Perform trouble diagnosis for CAN communication line. Refer to " «DTC U1000 CAN COMMUNICATION LINE»(ref-356285-S13574650372010021300000) ". NO: GO TO 3.
  3. CHECK AWD SOLENOID Check AWD solenoid. Refer to " «DTC C1204 AWD SOLENOID»(ref-356285-S42868806382010021300000) ". OK or NG OK: GO TO 4. NG: Replace electric controlled coupling for malfunction of AWD solenoid. Refer to " «DISASSEMBLY AND ASSEMBLY»(ref-356285-S00237368472010021300000) ".
  4. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: GO TO 5. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  5. SYMPTOM CHECK Check again. OK or NG OK: INSPECTION END NG: Replace electric controlled coupling for mechanical malfunction (mechanical engagement of clutch is not possible.). Refer to " «DISASSEMBLY AND ASSEMBLY»(ref-356285-S00237368472010021300000) ".
  1. CHECK TIRE Check the following. Tire pressure Wear condition Longitudinal tire size (There is no difference between longitudinal tires.) OK or NG OK: GO TO 2. NG: Drive at vehicle speed of 20 km/h (12 MPH) or more for 5 seconds or more after repairing or replacing damaged parts. (Initialize improper size tire information.)
  2. CHECK INPUT SIGNAL OF TIRE DIAMETER With CONSULT-III Start engine. Drive at 20 km/h (12 MPH) or more for approx. 200 seconds. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-III. Check monitor "DIS-TIRE MONI". Display of "DIS-TIRE MONI" "0-4mm": INSPECTION END Except for "0-4mm": GO TO 3.
  3. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to " «AWD CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUE»(ref-356285-S20180201722010021300000) ". OK or NG OK: GO TO 4. NG: Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
  4. SYMPTOM CHECK Check again. OK or NG OK: INSPECTION END NG: Replace AWD control unit.

Scheme 14

Scheme 14: REMOVAL
Scheme 14: REMOVAL
  1. Remove the dash side finisher. Refer to «BODY SIDE TRIM»(ref-356266-S29033188282010021300000) .
  2. Disconnect AWD control unit connector.
  3. Remove the AWD control unit.

INSPECTION

Cases

Check items below. If necessary, replace them with new ones.

Scheme 15

Scheme 15: INSPECTION
Scheme 15: INSPECTION
  1. Contact surfaces of bearing for wear, damage, etc.
  2. Damage and cracks of case.

Bearing

Check items below. If necessary, replace them with new ones.

Scheme 16

Scheme 16
Scheme 16
  1. Damage and rough rotation of bearing.

Shaft

Check items below. If necessary, replace them with new one.

Scheme 17

Scheme 17
Scheme 17
  1. Damage, peeling, dent, uneven wear, bending, etc. of shaft.

Gears and Chain

Check items below. If necessary, replace them with new ones.

Scheme 18

Scheme 18
Scheme 18
  1. Excessive wear, damage, peeling, etc. of gear and chain.

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