Tacoma (Without ETCS)
For throttle position sensor circuit inspection and wiring diagram (Scheme 502)- (Scheme 505). For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. To check for intermittent problems, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES article. To replace throttle position sensor, see THROTTLE POSITION SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL & INSTALLATION - V6 & V8. Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS under COMPUTERIZED ENGINE CONTROLS.
Scheme 502
Scheme 503
Scheme 504
Scheme 505
For throttle position sensor circuit inspection and wiring diagram (Scheme 506)- (Scheme 511). For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS under COMPUTERIZED ENGINE CONTROLS. To check throttle position sensor, see THROTTLE BODY under IDLE CONTROL SYSTEMS. To replace throttle position sensor, see THROTTLE POSITION SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL & INSTALLATION - V6 & V8.
Scheme 506
Scheme 507
Scheme 508
Scheme 509
Scheme 510
Scheme 511
For throttle position sensor circuit inspection and wiring diagram (Scheme 512)- (Scheme 518). For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS under COMPUTERIZED ENGINE CONTROLS. To replace throttle body, see THROTTLE CONTROL MOTOR under MOTORS in REMOVAL & INSTALLATION - V6 & V8.
Scheme 512
Scheme 513
Scheme 514
Scheme 515
Scheme 516
Scheme 517
Scheme 518
For throttle position sensor circuit inspection and wiring diagram (Scheme 519)- (Scheme 523). For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS under COMPUTERIZED ENGINE CONTROLS. To replace throttle body, see THROTTLE CONTROL MOTOR under MOTORS in REMOVAL & INSTALLATION - V6 & V8.
Scheme 519
Scheme 520
Scheme 521
Scheme 522
Scheme 523
For throttle position sensor circuit inspection and wiring diagram (Scheme 524)- (Scheme 528). For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS under COMPUTERIZED ENGINE CONTROLS. To replace throttle body, see THROTTLE CONTROL MOTOR under MOTORS in REMOVAL & INSTALLATION - V6 & V8.
