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Contents Wiring diagrams Section: Engine Controls - System & Component Testing - V6 & V8 All sections

A/T Models Toyota 4Runner III

Engine Controls - System & Component Testing - V6 & V8 5 illustrations ~183 words

A/T Models

  1. Disconnect electrical connector at Park/Neutral Position (PNP) switch. PNP switch is mounted on side of transmission/transaxle. Note terminal identification. (Scheme 269)
  2. Using ohmmeter, check for continuity between specified terminals with shift lever in proper positions. See «PARK/NEUTRAL POSITION SWITCH SPECIFICATIONS»(ref-91239-S28640376592001030600000) table. If proper continuity cannot obtained, adjust or replace PNP switch as necessary.
Application & Shift Lever PositionContinuity Between Terminals No.
Avalon, Camry, Camry Solara & Sienna
Park2 & 7; 5 & 6
Reverse2 & 8
Neutral2 & 9; 5 & 6
Drive2 & 10
22 & 3
Low2 & 4
Land Cruiser, Tacoma & 4Runner
Park4 & 7; 5 & 6
Reverse4 & 8
Neutral4 & 10; 5 & 6
Drive4 & 9
22 & 4
Low3 & 4

PARK/NEUTRAL POSITION SWITCH SPECIFICATIONS

Scheme 269

Scheme 269
Scheme 269

Power steering pressure switch is located on power steering pump, near pressure hose. Testing information is not available from manufacturer.

For testing of throttle control motor, see THROTTLE BODY under IDLE CONTROL SYSTEM.

  1. Ensure ignition is off. Disconnect electrical connector at Throttle Position (TP) sensor mounted on side of throttle body. Note terminal identification on TP sensor. (Scheme 270)- (Scheme 273).
  2. Apply vacuum to throttle opener. Using ohmmeter, check resistance between specified terminals in relation to throttle position. See «THROTTLE POSITION SENSOR RESISTANCE»(ref-91239-S00299047382001030600000) table. Replace components as necessary if resistance is not within specification.
ApplicationThrottle PositionTerminalsOhms
Avalon, Camry, Camry Solara & SiennaFully ClosedVTA & E2200-6300
Fully OpenVTA & E22000-10,200
VC & E22500-5900
TacomaFully ClosedVTA & E2200-5700
Fully OpenVTA & E22000-10,200
VC & E22500-5900
4RunnerFully ClosedVTA & E2280-6400
Fully OpenVTA & E22000-11,600
VC & E22700-7700
(1) Apply vacuum to throttle opener before checking TP sensor.
(1)Apply vacuum to throttle opener before checking TP sensor.

THROTTLE POSITION SENSOR RESISTANCE (1)

Scheme 270

Scheme 270
Scheme 270

Scheme 271

Scheme 271
Scheme 271

Scheme 272

Scheme 272
Scheme 272

Scheme 273

Scheme 273
Scheme 273

For testing of throttle position sensor, see THROTTLE BODY under IDLE CONTROL SYSTEM.