Toyota Tacoma Quiz
Vf2cm Transfer

Four Wheel Drive (4WD) Low Switch Circuit Range / Performance (P2772)

In this manual: Vf2cm Transfer
Introduction — 15Maintenance — 8Audio / Video — 94Garage Door Opener — 7Navigation / Multi Info Display — 84Park Assist / Monitoring — 86Brake — 50Brake Control / Dynamic Control Systems — 165Parking Brake — 52gr-fks Charging — 252gr-fks Cooling — 212gr-fks Emission Control — 132gr-fks Engine Control — 322gr-fks Engine Mechanical — 332gr-fks Exhaust — 92gr-fks Fuel — 422gr-fks Ignition — 62gr-fks Intake — 72gr-fks Lubrication — 152gr-fks Starting — 38Ac60e Automatic Transmission / Transaxle — 146Axle — 19Clutch — 20Cruise Control — 168Differential — 50Drive Shaft — 6Propeller Shaft — 23Rc62f Manual Transmission / Transaxle — 34Suspension — 22Tire And Wheel — 39Vf2cm Transfer — 44Can Communication — 45Multiplex Communication — 20Power Distribution — 5Power Steering — 29Steering Column — 29Air Conditioning — 108Door Lock — 88Engine Hood / Door — 16Engine Immobiliser — 47Exterior — 55Horn — 5Interior — 18Interior Panel — 8Lighting — 93Meter / Gauge / Display — 31Mirror — 22Other System — 24Pre-collision — 40Seat — 52Seat Belt — 40Sliding Roof — 26Supplemental Restraint Systems — 139Theft Deterrent — 20Window / Glass — 53Wiper / Washer — 24
~2min read
DESCRIPTION

This DTC is output when a malfunction in the L4 detection switch is detected.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

P2772

Four Wheel Drive (4WD) Low Switch Circuit Range / Performance
  • Diagnosis Condition: Ignition switch turned to ON (3 seconds elapse after ignition switch is turned to ON)
  • Malfunction Status: L4 detection switch is stuck OFF when the vehicle is in L4
  • Malfunction Time: 10 seconds or more
  • Other: 1 trip detection logic
  • Wire harness and connector
  • 4 wheel drive control ECU
  • Transfer shift actuator assembly
WIRING DIAGRAM PROCEDURE PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY)

(a) Disconnect the F13 4 wheel drive control ECU connector.

(b) Disconnect the T4 transfer shift actuator assembly connector.

(c) for Hydraulic Brake Booster:

Disconnect the S1 skid control ECU (Master Cylinder Solenoid) connector.

for Vacuum Brake Booster:

Disconnect the S1 skid control ECU (brake actuator assembly) connector.

(d) for 2TR-FE:

Disconnect the E21 ECM connector.

for 2GR-FKS:

Disconnect the E13 ECM connector.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

F13-3 (4WDL) - T4-9 (L4)

Always

Below 1 Ω

T4-10 (GND) - Body ground

Always

Below 1 Ω

F13-3 (4WDL) or T4-9 (L4) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

  1. CHECK TRANSFER SHIFT ACTUATOR ASSEMBLY

(a) Turn the ignition switch to ON.

(b) Turn the transfer position switch to L4.

(c) Turn the ignition switch off.

(d) Disconnect the T4 transfer shift actuator assembly connector.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

9 (L4) - 10 (GND)

Always

Below 1 Ω
Text in Illustration

*a

Component without harness connected

(Transfer Shift Actuator Assembly)
OK

REPLACE 4 WHEEL DRIVE CONTROL ECU
NG

REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY

Test yourself

A quick Toyota Tacoma quiz: every answer comes with an explanation and a link to the manual page.