Toyota Tacoma (2015-2018) Service Manual: Data List / Active Test

Toyota Tacoma (2015-2018) Service Manual / Differential / Differential System(w/ Rear Differential Lock) / Data List / Active Test

DATA LIST / ACTIVE TEST

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

1. DATA LIST OF 4 WHEEL DRIVE CONTROL ECU

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Powertrain / Four Wheel Drive / Data List.

(f) According to the display on the Techstream, read the Data List.

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.
Rear Differential Lock Control SW (R)	Differential lock switch status (differential lock switch input signal of R terminal on ECU side)/ ON or OFF	ON: Switch pressed and held OFF: Switch not pressed	-
Rear Differential Lock Detection SW (SLS)	Differential lock indicator switch status (differential lock indicator switch input signal of SLS terminal on ECU side)/ ON or OFF	ON: Rear differential locked condition OFF: Rear differential free condition	-
IG SW	Ignition switch status/ ON or OFF	ON: Ignition switch ON	-
Rear Differential Lock Solenoid Target Current	Differential lock coil drive circuit target current value/ Min.: 0.0 A Max.: 25.5 A	Rear differential locked: 1.0 to 8.0 A Rear differential free: 0.1 A or less	-
Rear Differential Lock Solenoid Actual Current	Differential lock coil drive circuit actual current value/ Min.: 0.0 A Max.: 25.5 A	Rear differential locked: 1.0 to 8.0 A Rear differential free: 0.1 A or less	-
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	-
Rear Differential Lock Status Signal	Rear differential LOCK status signal/ ON or OFF	ON: Rear differential locked condition OFF: Rear differential free condition	-
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)
Rear Differential Lock Indicator Request	Rear differential lock indicator light request/ Blink4*1, Blink3, Blink2, Blink1, ON or OFF	Blink3: Indicator light rapidly blinks Blink2: Indicator light blinks 3 times 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)
Rear Differential Lock Solenoid Energization Request	Differential lock coil power command/ ON or OFF	ON: Power supplied to differential lock coil OFF: Power not supplied to differential lock coil	-
IG Voltage	IG monitor voltage/ Min.: 0.0 V Max.: 25.5 V	11 to 14 V: Ignition switch ON	-
Rear Differential Lock Solenoid Voltage	Differential lock coil drive circuit monitor voltage/ Min.: 0.0 V Max.: 25.5 V	Rear differential locked: Higher than 3.5 V Rear differential free: 3.5 V or less	-
Rear Differential Lock Solenoid Duty	Differential lock coil drive circuit duty/ Min.: 0% Max.: 255%	Rear differential locked: 0 to 100% Rear differential free: 0%	-
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 or 2WD Rr Diff. Lock	Displays transfer shift actuator, A.D.D. actuator*2 and differential lock coil transition condition	HINT: K1 to K10: Control while switching prohibited S01 to S24: Control while switching limited B1 to B6: Control while switching again
Rear Differential Lock Solenoid	Differential lock coil ECU internal power status/ ON or OFF	ON: Power supplied OFF: Power not supplied	-
CAN Signal Invalid Status by IG Voltage Low	Whether CAN communication data is invalid 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	Whether actuator switch input is invalid due to IG voltage drop/ Valid or Inval	Valid: IG voltage 7.1 V or higher	Inval: IG voltage below 7.1 V
Transfer Shift Invalid Status by IG Voltage Low	Whether transfer shift actuator switching operation is invalid due to IG voltage drop/ Valid or Inval	Valid or Inval	Inval: IG voltage below 9.5 V
Number of DTC	Number of DTCs stored/ Min.: 0 Max.: 255	0	-

*1: Item not supported, therefore not displayed
*2: w/ A.D.D. Actuator

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