Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Freeze Frame Data

FREEZE FRAME DATA

1. FREEZE FRAME DATA

(a) When a DTC is stored, the 4 wheel drive control ECU stores the current vehicle state as Freeze Frame Data.

HINT:

Freeze Frame Data at the time a DTC is stored:

When the 4 wheel drive control ECU stores data at the time a DTC is stored, no updates will be performed until the data is cleared.

2. CHECK FREEZE FRAME DATA

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Powertrain / Four Wheel Drive / Trouble Codes.

(f) According to the display on the Techstream, select the trouble code data display with Freeze Frame Data.

Four Wheel Drive

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

FR Wheel Speed

Front wheel speed sensor RH reading/

Min.: 0.00 km/h (0.00 mph)

Max.: 327.67 km/h (203.61 mph)

Vehicle stopped: 0.00 km/h (0.00 mph)

No large fluctuations when driving at a constant speed.

FL Wheel Speed

Front wheel speed sensor LH reading/

Min.: 0.00 km/h (0.00 mph)

Max.: 327.67 km/h (203.61 mph)

Vehicle stopped: 0.00 km/h (0.00 mph)

No large fluctuations when driving at a constant speed.

RR Wheel Speed

Rear wheel speed sensor RH reading/

Min.: 0.00 km/h (0.00 mph)

Max.: 327.67 km/h (203.61 mph)

Vehicle stopped: 0.00 km/h (0.00 mph)

No large fluctuations when driving at a constant speed.

RL Wheel Speed

Rear wheel speed sensor LH reading/

Min.: 0.00 km/h (0.00 mph)

Max.: 327.67 km/h (203.61 mph)

Vehicle stopped: 0.00 km/h (0.00 mph)

No large fluctuations when driving at a constant speed.

Vehicle Speed

Maximum wheel speed sensor reading/

Min.: 0.00 km/h (0.00 mph)

Max.: 327.67 km/h (203.61 mph)

Vehicle stopped: 0.00 km/h (0.00 mph)

No large fluctuations when driving at a constant speed.

Front Differential Oil Temperature

Front differential oil temperature/

Min.: -56°C (-69°F)

Min.: 199°C (390°F)

Displays front differential oil temperature

-

4WD Control SW (LO)

Transfer position switch status (transfer position switch input signal of LO terminal on ECU side)/

ON or OFF

ON: H4 or L4

OFF: 2WD, between 2WD and H4 or between H4 and L4

-

4WD Control SW (2-4)

Transfer position switch status (transfer position switch input signal of 2-4 terminal on ECU side)/

ON or OFF

ON: 2WD or H4

OFF: Between 2WD and H4, between H4 and L4 or L4

-

4WD Detection SW (4WD)

Transfer shift actuator condition (4WD detection switch input signal of 4WD terminal on ECU side)/

ON or OFF

ON: 4WD state

OFF: 2WD state

-

L4 Detection SW (4WDL)

Transfer shift actuator condition (L4 detection switch input signal of 4WDL terminal on ECU side)/

ON or OFF

ON: L4 state

OFF: State other than L4

-

ADD Position SW (ADD)

A.D.D. actuator condition (A.D.D. position switch input signal of ADD terminal on ECU side)/

ON or OFF

ON: A.D.D. actuator lock condition (4WD state)

OFF: A.D.D. actuator free condition (2WD state)

-

IG SW

Ignition switch status/

ON or OFF

ON: Ignition switch ON

-

Transfer Limit SW (TL1)

Transfer shift actuator limit switch (TL1) condition/

ON or OFF

ON: 2WD or switching between 2WD and H4

OFF: H4, switching between H4 and L4 or L4

-

Transfer Limit SW (TL2)

Transfer shift actuator limit switch (TL2) condition/

ON or OFF

ON: Switching between H4 and L4 or L4

OFF: 2WD, switching between 2WD and H4 or H4

-

Transfer Limit SW (TL3)

Transfer shift actuator limit switch (TL3) condition/

ON or OFF

ON: Switching between 2WD and H4, H4 or switching between H4 and L4

OFF: 2WD or L4

-

ADD Limit SW (DL1)

A.D.D. actuator limit switch (DL1) condition/

ON or OFF

ON: Free condition or switching between free and lock conditions

OFF: Lock condition

-

ADD Limit SW (DL2)

A.D.D. actuator limit switch (DL2) condition/

ON or OFF

ON: Switching between free and lock conditions or lock condition

OFF: Free condition

-

Clutch SW

Clutch start switch status/

ON or OFF

ON: Clutch pedal depressed

OFF: Clutch pedal released

Used only for vehicles with a manual transmission.

Displays OFF for vehicles with an automatic transmission.

Shift SW Status (N Range)

Shift lever neutral condition/

ON or OFF

ON: Shift lever in N*1, shift lever in neutral*2

OFF: Shift lever not in N*1, shift lever not in neutral*2

-

Request Value of Vehicle Speed Limit

4WD vehicle speed limit request value/

Min.: 0 km/h (0 mph)

Max.: 255 km/h (158 mph)

Vehicle speed limit not requested: 200 km/h (124 mph)

-

Transfer Shift Motor Target Current

Target current for transfer shift motor driver circuit/

Min.: 0.0 A

Max.: 25.5 A

Normal: 0 A

Switching: 0 to 25.5 A

-

Transfer Shift Motor Actual Current

Actual current of transfer shift motor driver circuit/

Min.: 0.0 A

Max.: 25.5 A

Normal: 0 A

Switching: 0 to 25.5 A

-

ADD Motor Target Current

Target current for A.D.D. shift motor driver circuit/

Min.: 0.0 A

Max.: 25.5 A

Normal: 0 A

Switching: 0 to 25.5 A

-

ADD Motor Actual Current

Actual current of A.D.D. shift motor driver circuit/

Min.: 0.0 A

Max.: 25.5 A

Normal: 0 A

Switching: 0 to 25.5 A

-

Motor Energization Status Signal

Motor power signal status/

ON or OFF

ON: Power supplied to motor

OFF: Power not supplied to motor

-

C/C Cancel Request

Cruise control cancellation signal status/

ON or OFF

ON: Cruise control cancellation requested

OFF: Cruise control cancellation not requested

-

4WD Status Signal

4WD status signal/

ON or OFF

ON: 4WD state

OFF: 2WD state

-

L4 Status Signal

L4 status signal/

ON or OFF

ON: L4 state

OFF: State other than L4

-

Status of Transfer Shift Actuator

Transfer shift actuator failure status/

Normal or Abnormal

Normal: Actuator normal

Abnormal: Actuator abnormal

-

Buzzer Request

Buzzer sounding request/

NO Sound, Sound(3 times) or Sound

  • NO Sound: Does not sound
  • Sound(3 times): Sounds 3 times
  • Sound: Sounds intermittently
  • Sounds 3 times:

    Sounds 3 times at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)

  • Sounds intermittently:

    0.5 second intervals (0.5 seconds on and 0.5 seconds off)

4WD Indicator Request

4WD indicator light (green) request/

ON, OFF, Blink4*3, OFF, Blink2*3, Blink1, ON or OFF

  • ON: Indicator light (green) illuminates
  • OFF: Indicator light (green) turns off
  • OFF: Indicator light (green) turns off
  • Blink1: Indicator light (green) blinks
  • ON: Indicator light (green) illuminates
  • OFF: Indicator light (green) turns off
  • Blinking: 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
  • Rapidly blinking: 0.25 second intervals (0.25 seconds on and 0.25 seconds off)

L4 Indicator Request

4LO indicator light request/

Blink4*3, Blink3, Blink2*3, Blink1, ON or OFF

  • Blink3: Indicator light rapidly blinks
  • Blink1: Indicator light blinks
  • ON: Indicator light illuminates
  • OFF: Indicator light turns off
  • Blinking: 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
  • Rapidly blinking: 0.25 second intervals (0.25 seconds on and 0.25 seconds off)

Multi-Terrain Select Control

Multi-terrain select control signal/

OK or NG

-

This item is displayed but not used.

Vehicle Speed Limit Request

4WD vehicle speed limit request/

ON or OFF

ON: Vehicle speed limiting is performed

OFF: Vehicle speed limiting is not performed

-

Transfer Motor Energization Request

Transfer shift motor power supply command/

ON or OFF

ON: Vehicle speed limiting is performed

OFF: Vehicle speed limiting is not performed

-

ADD Motor Energization Request

A.D.D. shift motor power supply command/

ON or OFF

ON: Power supplied to A.D.D. shift motor

OFF: Power not supplied to A.D.D. shift motor

-

IG Voltage

IG monitor voltage/

Min.: 0.0 V

Max.: 25.5 V

11 to 14 V: Ignition switch ON

-

Motor Voltage

Motor driver circuit monitor voltage/

Min.: 0.0 V

Max.: 25.5 V

Normal: 1.5 to 12.0 V

Switching: 3.5 V

-

Motor Duty

Motor driver circuit duty/

Min.: 0%

Max.: 255%

Normal: 0%

Switching: 0 to 100%

-

Front Differential Oil Temperature Warning Count

Count of front differential oil temperature warnings while ignition switch turned to ON/

Min.: 0 times

Max.: 255 times

Displays total number of oil temperature warnings

-

Vehicle Speed Limit Request Count

Count of 4WD vehicle speed limit requests while ignition switch turned to ON/

Min.: 0 times

Max.: 255 times

Displays total number of 4WD vehicle speed limit requests

-

Mode Status

Mode transition condition/

Initial Control, Particular Control at Start-Up, Shift Settling Control at Start-Up, H2, H2->H4L(T/F Activating), H2->H4L(ADD Activating), H4L->H2(T/F Activating), H4L->H2(ADD Activating), H4L, H4L->L4L, L4L->H4L, L4L Rr Diff. Free, H4F->L4F, L4F->H4F, H4F, H4F->H4L, H4L->H4F, L4F, L4L Rr Diff. Free->Lock, L4L Rr Diff. Lock->Free, L4L Rr Diff. Lock, K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, S01, S02, S03, S04, S05, S06, S07, S08, S09, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20, S21, S22, S23, S24, B1, B2, B3, B4, B5, B6, 2WD Rr Diff. Free, 2WD Rr Diff. Free->Lock, 2WD Rr Diff. Lock->Free, 2WD Rr Diff. Lock

Displays transfer shift actuator, A.D.D. actuator and differential lock coil*5 transition conditions

HINT:

  • K1 to K10: Control while switching prohibited
  • S01 to S24: Control while switching limited
  • B1 to B6: Control while switching again

Oil Temperature Sensor Mode

Oil temperature sensor detection mode/

Low Temperature Mode or High Temperature Mode

Low Temperature Mode: Detecting oil temperature in low temperature mode

High Temperature Mode: Detecting oil temperature in high temperature mode

-

Motor Relay

(RY1-1)

Internal ECU relay

(RY1-1)

condition*4/

ON or OFF

ON: Relay on

OFF: Relay off

-

Motor Relay

(RY1-2)

Internal ECU relay

(RY1-2)

condition*4/

ON or OFF

ON: Relay on

OFF: Relay off

-

Motor Relay

(RY2-1)

Internal ECU relay

(RY2-1)

condition*4/

ON or OFF

ON: Relay on

OFF: Relay off

-

Motor Relay

(RY2-2)

Internal ECU relay

(RY2-2)

condition*4/

ON or OFF

ON: Relay on

OFF: Relay off

-

AT/MT

AT or MT identification/

AT or MT

AT: Automatic transmission

MT: Manual transmission

-

CAN Signal Invalid Status by IG Voltage Low

Whether CAN communication data invalid condition due to IG voltage drop/

Valid or Inval

Valid: IG voltage 9.5 V or higher

Inval: IG voltage below 9.5 V

SW Input Invalid Status by IG Voltage Low

Input invalid condition of switches inside actuator due to IG voltage drop/

Valid or Inval

Valid: IG voltage 7.1 V or higher

Valid: IG voltage 7.1 V or higher

Transfer Shift Invalid Status by IG Voltage Low

Transfer shift actuator switching operation invalid condition due to IG voltage drop/

Valid or Inval

Valid: IG voltage 9.5 V or higher

Inval: IG voltage below 9.5 V

Number of DTC

Number of DTCs stored/

Min.: 0

Max.: 255

0

-

  • *1: for Automatic Transmission
  • *2: for Manual Transmission
  • *3: Item not supported, therefore not displayed
  • *4: For the position of the relay, refer to the P17A9 wiring diagram (See page *5: w/ Differential Lock ).
  • *5: w/ Differential Lock

3. CLEAR FREEZE FRAME DATA

NOTICE:

Clearing the DTCs will also clear the Freeze Frame Data.

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Clear the DTCs and Freeze Frame Data (See page Diagnostic Trouble Code Chart ).

Fail-safe Chart
FAIL-SAFE CHART 1. FAIL-SAFE OPERATION AND DEACTIVATION CONDITION TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM DTC No. Fail-safe Operation Fail-safe Deactivation Condition ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM DTC Code Detection Item See page P163B 4WD ECU Malfunction ...

Other materials:

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REMOVAL PROCEDURE 1. REMOVE INTAKE MANIFOLD (See page ) 2. REMOVE WIRE HARNESS CLAMP BRACKET (a) Remove the 2 bolts and wire harness clamp bracket. 3. REMOVE FUEL TUBE SUB-ASSEMBLY (a) Disconnect the fuel tube sub-assembly from ...

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