System Tests: Notes

NOTE: Before proceeding with any system test, ensure proper trouble shooting procedure was performed. See TROUBLE SHOOTING PROCEDURE under TROUBLE SHOOTING. If all systems are not operating, perform TEST NO. 17: BODY ELECTRONIC CONTROL UNIT DOES NOT OPERATE to verify operation of body Electronic Control Unit (ECU). It may be necessary to check multiplex control system wiring circuits between body Electronic Control Unit (ECU), Engine Control Module (ECM) and combination meter to verify proper operation of multiplex communication system. See Fig 1. For combination meter electrical connector and terminal identification, see Fig 2. For ECM location and electrical connector identification, see Fig 3.

Fig 1: Identifying Multiplex Control System Wiring Circuits

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Identifying Combination Meter Electrical Connectors & Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Locating Engine Control Module & Identifying Electrical Connectors & Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SYMPTOM INDEX

System & Symptom

Test To Be Performed

Power Door Lock Control System

Power Door Locks May Not Be Locked Or Unlocked When Using Power Door Lock Control Switch

Test No. 1

Two-Operation Unlock Function Does Not Operate ⁽¹⁾

Test No. 2

Key Confinement Prevention Function Does Not Operate ⁽²⁾

Test No. 3

Power Door Lock Does Not Operate Only On One Door

Test No. 4

Back (Rear Liftgate) Door Opener Function Does Not Operate

Test No. 5

Keyless Entry System

All Functions Of Keyless Entry System Does Not Operate

Test No. 6

Lock Or Unlock Function Does Not Operate

Test No. 7

Automatic Lock Function Does Not Operate Even If Any Door Is Opened Within 30 Seconds After All Doors Are Unlocked By Keyless Entry System ⁽³⁾

Test No. 8

Interior Lighting System

Illuminated Entry System Does Not Operate

Test No. 9

Headlight & Taillight System

Headlights Do Not Operate

Test No. 10

Taillights Do Not Operate

Test No. 11

Automatic Light Control System Does Not Operate

Test No. 12

Automatic Turn Off System Does Not Operate

Test No. 13

Various Operations

Driver's Seat Belt Warning Light On Instrument Cluster Does Not Turn Off

Test No. 14

Passenger's Seat Belt Warning Light On Clock Assembly Does Not Turn Off

Test No. 15

Rear Window Defogger Does Not Operate

Test No. 16

Body Electronic Control Unit Does Not Operate

Test No. 17

Fuel Gauge Does Not Operate

Test No. 18

⁽¹⁾	Two-operation unlock function unlocks all doors. When using the key and turning driver's door lock once, only driver's door will unlock. Turning driver's door lock twice in succession will unlock all the doors simultaneously.

⁽²⁾	Key confinement prevention function prevents the doors from being locked if ignition key is in the ignition lock cylinder.

⁽³⁾	Automatic lock function allows 30 seconds to open the door once the door is unlocked with the keyless entry remote transmitter or the door will be locked again.