Body Control Systems: Other Toyota Prius I рестайлинг

SERVICE PRECAUTIONS

The following service precautions must be followed

Scheme 11

1. Ensure ignition is off and ignition key is removed from ignition before performing any inspection or service procedure in engine compartment, as engine may automatically start and shut off when ignition is on and READY light is illuminated. READY light is displayed just above the shift lever position indicator on instrument cluster at center of instrument panel.
2. Read all service and warning labels in engine compartment before performing any procedures in engine compartment.
3. All high-voltage wiring harness connectors contain Orange connectors. DO NOT touch any wiring harness that contains Orange connectors.
4. High-voltage battery and other high-voltage components may be identified by HIGH VOLTAGE caution labels on them. DO NOT touch these components.
5. If necessary to inspect or service high-voltage system, ensure ignition is off. Remove service plug and wait at least 5 minutes to ensure high voltage is fully discharged before touching any high-voltage wiring harness, connectors or components. Service plug is located on service plug assembly at driver's side front corner of trunk compartment, near high-voltage battery. (Scheme 11) Ensure service plug is stored in a location in which no one may install service plug while technician is working on the vehicle.
6. If necessary to touch any high-voltage wiring harness, connectors or components, ensure service plug is removed and battery voltage or less exists at electrical connector. Use Toyota insulated gloves when touching any high-voltage wiring harness, connectors or components. Ensure insulated gloves are dry and in good condition and that no holes exist in insulated gloves by applying air to insulated glove before touching any high-voltage wiring harness, connectors or components.
7. DO NOT wear any metal objects while working on vehicle which may accidently drop and cause a short circuit.
8. If any high-voltage wiring harness connector is disconnected, ensure terminal on wiring harness connector is wrapped with tape to prevent wiring harness connector from contacting any surface.
9. If servicing high-voltage system, place sign on roof of vehicle to indicate to other technicians that high-voltage system is being serviced.

SYSTEM TESTS

Note. Before proceeding with any system test, ensure proper trouble shooting procedure was performed and multiplex control system operation was verified. See appropriate trouble shooting procedure for system application as listed under TROUBLE SHOOTING .

Note. If all systems which are controlled by body Electronic Control Unit (ECU) are not operating, perform TEST NO. 18: BODY ELECTRONIC CONTROL UNIT DOES NOT OPERATE to verify operation of body ECU.

SYMPTOM INDEX (BODY CONTROL SYSTEM)

SYMPTOM INDEX (DRIVER DOOR CONTROL SYSTEM)

COMPONENT TESTS

DAYTIME RUNNING LIGHT RELAY

Note. Daytime running light relay may also be referred to as daytime running light relay (main). Manufacturer does not provide individual component testing for daytime running light relay, as only circuit testing for daytime running light relay is available.

Scheme 12

1. Ensure ignition is off. Disconnect 20-pin electrical connector at daytime running light relay. Daytime running light relay is located near driver's side of instrument panel. see scheme 2
2. Note electrical terminal identification on electrical connector for daytime running light relay. (Scheme 12) Using ohmmeter and voltmeter, perform circuit tests at specified terminals under specified conditions. (Scheme 12) If any reading is not within specification, check wiring circuit as necessary. See WIRING DIAGRAMS in DAYTIME RUNNING LIGHTS article. If all readings are within specification, replace daytime running light relay.

DOOR COURTESY SWITCH

Remove door courtesy switch from pillar post at rear of the door. see scheme 1 Using ohmmeter, check that continuity exists between electrical terminal and body of door courtesy switch with switch pin released to ON position and no continuity exists with switch pin depressed to OFF position. (Scheme 13) Replace door courtesy switch if defective.

Scheme 13

Scheme 14

1. Door key lock and unlock switch is incorporated into door lock assembly. Remove door panel from driver's side front door or passenger's side front door for access to appropriate door lock assembly which contains the door key lock and unlock switch. see scheme 1
2. Disconnect 6-pin electrical connector at door lock assembly. Note electrical terminal identification on door lock assembly and switch positions. (Scheme 14)
3. On driver's side front door, using ohmmeter, check that continuity exists between terminals No. 3 and 5 with switch in LOCK position and that continuity exists between terminals No. 3 and 6 with switch in UNLOCK position. (Scheme 14) On passenger's side front door, using ohmmeter, check that continuity exists between terminals No. 2 and 4 with switch in LOCK position and that continuity exists between terminals No. 1 and 4 with switch in UNLOCK position. (Scheme 14) On all applications, replace door key lock and unlock switch if continuity is not as specified.

Scheme 15

1. Door lock control switch is located on passenger's side front door. see scheme 1 Disconnect electrical connector from door lock control switch.
2. Note door lock control switch electrical terminal identification. (Scheme 15) Using ohmmeter, check that continuity is as specified door lock control switch electrical terminals in relation to door lock control switch position. See «DOOR LOCK CONTROL SWITCH CONTINUITY»(ref-132535-S16010188342001112800000) table. Replace door lock control switch if continuity is not as specified. DOOR LOCK CONTROL SWITCH CONTINUITY Switch Position Switch Terminals No. Specification LOCK 3 & 6 Continuity OFF (1) (1) UNLOCK 3 & 5 Continuity (1) There should be no continuity between any terminals.

Scheme 16

1. Remove door panel for access to appropriate door lock assembly which contains the door lock motor. see scheme 1 On driver's side front door or passenger's side front door, disconnect the 6-pin electrical connector at door lock assembly. On driver's side rear door or passenger's side rear door, disconnect the 4-pin electrical connector at door lock assembly.
2. On all applications, using jumper wires, apply battery voltage and ground to specified terminals on door lock assembly and check that door lock motor moves the door lock link to the UNLOCK position. Perform STEP 1 in illustration. (Scheme 16)
3. Reverse jumper wires so polarity is reversed and check that the door lock motor moves the door lock link to the LOCK position. Perform STEP 2 in illustration. (Scheme 16) Replace door lock assembly if operation is not as specified.

Scheme 17

1. Remove door panel for access to appropriate door lock assembly which contains the door lock motor and door unlock detection switch. see scheme 1
2. To check door unlock detection switch on driver's side front door or passenger's side front door, go to next step. To check door unlock detection switch on driver's side rear door or passenger's side rear door, go step 4.
3. On driver's side front door or passenger's side front door, disconnect the 6-pin electrical connector at door lock assembly. Note electrical terminal identification on door lock assembly and switch positions. (Scheme 17) Using ohmmeter, check that no continuity exists between terminals No. 3 and 4 with switch in LOCK position and that continuity exists between terminals No. 3 and 4 with switch in UNLOCK position. Replace door unlock detection switch if continuity is not as specified.
4. On driver's side rear door or passenger's side rear door, disconnect the 4-pin electrical connector at door lock assembly. Note electrical terminal identification on door lock assembly and switch positions. (Scheme 17) On driver's side rear door, using ohmmeter, check that no continuity exists between terminals No. 1 and 2 with switch in LOCK position and that continuity exists between terminals No. 1 and 2 with switch in UNLOCK position. On passenger's side rear door, using ohmmeter, check that no continuity exists between terminals No. 3 and 4 with switch in LOCK position and that continuity exists between terminals No. 3 and 4 with switch in UNLOCK position. Replace door unlock detection switch if continuity is not as specified.

Scheme 18

1. Ensure ignition is off. Remove DRL relay from fuse/relay box located at passenger's side of engine compartment, near strut tower.
2. Note identification of electrical terminals on DRL relay. (Scheme 18) Using ohmmeter, check that no continuity exists between terminals No. 2 and 5 on DRL relay. Check that continuity exists between terminals No. 1 and 3 on DRL relay.
3. Using jumper wires, apply battery voltage and ground to terminals No. 1 and 3 on DRL relay. Check that continuity now exists between terminals No. 2 and 5 on DRL relay. (Scheme 18) Replace DRL relay if defective.

Scheme 19

1. Remove necessary steering column covers for access to headlight control switch. see scheme 1 Disconnect 17-pin electrical connector from headlight control switch.
2. Using ohmmeter, check for no continuity and continuity between specified electrical terminals on headlight control switch in relation to headlight control switch position. (Scheme 19) See «HEADLIGHT CONTROL SWITCH CONTINUITY»(ref-132535-S15360502412002012200000) table. Replace headlight control switch if defective. HEADLIGHT CONTROL SWITCH CONTINUITY Switch Position Switch Terminals No. Specification OFF (1) (1) TAIL 14 & 16 Continuity HEAD 13, 14 & 16 Continuity FLASH 7, 8 & 16 Continuity LOW BEAM 16 & 17 Continuity HIGH BEAM 7 & 16 Continuity (1) There should be no continuity between any terminals.

HEADLIGHT DIMMER RELAY

Note. Headlight dimmer relay may also be referred to as dim relay.

Headlight dimmer relay is located in fuse/relay box at driver's side front corner of engine compartment, near strut tower. see scheme 1 Testing information is not available from manufacturer. It may be necessary to consult wiring diagram for testing of headlight dimmer relay. See WIRING DIAGRAMS in DAYTIME RUNNING LIGHTS article.

HEADLIGHT RELAY

Note. Headlight relay may also be referred to as head relay or headlight control relay.

1. Ensure ignition is off. Remove headlight relay. Headlight relay is located in fuse/relay box at driver's side front corner of engine compartment. see scheme 1
2. Note identification of electrical terminals on headlight relay. (Scheme 18) Using ohmmeter, check that no continuity exists between terminals No. 2 and 5 on headlight relay. Check that continuity exists between terminals No. 1 and 3 on headlight relay.
3. Using jumper wires, apply battery voltage and ground to terminals No. 1 and 3 on headlight relay. Check that continuity now exists between terminals No. 2 and 5 on headlight relay. (Scheme 18) Replace headlight relay if defective.

INTERIOR LIGHT

Note. Interior light may also be referred to as dome light.

Scheme 20

1. Interior light is located at center of headliner. see scheme 1 Remove interior light assembly and disconnect electrical connector.
2. Using ohmmeter, check that continuity exists between body ground and electrical terminal on light assembly with light switch in ON position. (Scheme 20) Replace bulb or interior light assembly if continuity does not exist.

JAM PROTECTION LIMIT SWITCH

Jam protection limit switch is used only on the power window on the driver's side front door. Testing information is not available from manufacturer.

JAM PROTECTION PULSE SWITCH

Jam protection pulse switch is used only on the power window on the driver's side front door. Testing information is not available from manufacturer.

Scheme 21

1. Disconnect electrical connector for key unlock warning switch. Key unlock warning switch is located on upper steering column bracket, near ignition lock cylinder. see scheme 1 Key unlock warning switch may also be referred to as unlock warning switch.
2. Connect ohmmeter between terminals No. 1 and 2 at electrical connector for key unlock warning switch. (Scheme 21) Check that no continuity exists with ignition key removed from ignition lock cylinder. Check that continuity exists with ignition key installed in ignition lock cylinder. Replace key unlock warning switch if defective. See «KEY UNLOCK WARNING SWITCH»(ref-132535-S37774510542002012200000) under REMOVAL & INSTALLATION.

Scheme 22

1. Luggage compartment door courtesy switch is located on the trunk lid, near the latch assembly. see scheme 1 Disconnect electrical connector for luggage compartment door courtesy switch.
2. Using ohmmeter, check that continuity exists between electrical terminals and body of luggage compartment door courtesy switch with switch pin released to the ON position, and that no continuity exists with switch pin depressed to the OFF position. (Scheme 22) Replace luggage compartment door courtesy switch if defective.

POWER RELAY

Note. Power relay may also be referred to as power main relay.

Scheme 23

1. Ensure ignition is off. Remove power relay. Power relay is located in fuse/relay box at driver's side of instrument panel. see scheme 1
2. Note identification of electrical terminals on power relay. (Scheme 23) Using ohmmeter, check that no continuity exists between terminals No. 3 and 5 on power relay. Check that continuity exists between terminals No. 1 and 2 on power relay.
3. Using jumper wires, apply battery voltage and ground to terminals No. 1 and 2 on power relay. Check that continuity now exists between terminals No. 3 and 5 on power relay. (Scheme 23) Replace power relay if defective.

POWER WINDOW MASTER SWITCH

Note. Power window master switch is located on driver's side front door and power window switches are located on all other passenger doors. For testing of power window switch, see POWER WINDOW SWITCH . Power window master switch may also be referred to as the driver's door Electronic Control Unit (ECU). The only testing available from manufacture for power window master switch is one touch power window system which consists of the auto up or down feature.

Scheme 24

1. Power window master switch is located on driver's side front door. see scheme 1 Current draw should be checked. If using ammeter with measuring probe to check current draw, go to next step. If using ammeter without measuring probe, go to step 4.
2. Remove power window master switch and then reinstall electrical connector on power window master switch. Connect probe for ammeter at terminal No. 5 at electrical connector for power window master switch. (Scheme 24)
3. Turn ignition on and place the auto switch for driver's side power window in the down position. Note current draw while the window goes down and when window is fully downward. The Positive Temperature Coefficient (PTC) will open within 4-90 seconds after the window stops going downward so current draw with window fully downward must be checked before the PTC opens. Current draw as window goes down should be approximately 7 amps and current draw with window fully downward should increase to approximately 14.5 amps or more. If current draw is as specified, replace power window master switch.
4. Disconnect electrical connector at power window master switch. Connect ammeter and battery between specified terminals on electrical connector for power window master switch. (Scheme 24) Note current draw while the window goes down and when window is fully downward. The Positive Temperature Coefficient (PTC) will open within 4-90 seconds after the window stops going downward so current draw with window fully downward must be checked before the PTC opens. Current draw as window goes down should be approximately 7 amps and current draw with window fully downward should increase to approximately 14.5 amps or more. If current draw is as specified, replace power window master switch.

POWER WINDOW SWITCH

Note. Power window master switch is located on driver's side front door and power window switches are located on all other passenger doors. For testing of power window master switch, see POWER WINDOW MASTER SWITCH .

Scheme 25

1. Disconnect electrical connector from power window switch. Note power window switch electrical terminal identification. (Scheme 25)
2. Using ohmmeter, check that continuity is as specified between indicated power window switch electrical terminals in relation to window switch position. See «POWER WINDOW SWITCH CONTINUITY»(ref-132535-S42317326032001112800000) table. Replace power window switch if continuity is not as specified. POWER WINDOW SWITCH CONTINUITY Switch Position Switch Terminals No. Specification UP 2 & 3; 4 & 5 Continuity OFF 2, 3 & 5 Continuity DOWN 2 & 4; 3 & 5 Continuity

SEAT BELT BUCKLE SWITCH

Seat belt buckle switch is located near the bottom of each seat belt assembly. Testing information is not available from manufacturer.

TAILLIGHT RELAY

Note. Taillight relay may also be referred to as tail relay or taillight control relay.

Scheme 26

1. Ensure ignition is off. Remove taillight relay. Taillight relay is located in fuse/relay box at driver's side of instrument panel. see scheme 1
2. Note identification of electrical terminals on taillight relay. (Scheme 26) Using ohmmeter, check that no continuity exists between terminals No. 3 and 5 on taillight relay. Check that continuity exists between terminals No. 1 and 2 on taillight relay.
3. Using jumper wires, apply battery voltage and ground to terminals No. 1 and 2 on taillight relay. Check that continuity now exists between terminals No. 3 and 5 on taillight relay. (Scheme 26) Replace taillight relay if defective.

PIN VOLTAGE TESTS

BODY ELECTRONIC CONTROL UNIT

Note. Before attempting to diagnose malfunctions in body control system and body Electronic Control Unit (ECU), see TROUBLE SHOOTING PROCEDURE (BODY CONTROL SYSTEM) under TROUBLE SHOOTING to ensure proper procedure is followed to ensure body ECU is able to communicate with rest of multiplex control system.

Body ECU is located at driver's side of instrument panel on the fuse/relay box and contains an 18-pin and 20-pin electrical connector. see scheme 2 Using voltmeter, check voltage between specified body ECU terminals under specified condition. (Scheme 27)- (Scheme 28). If voltage is not within specification, repair wiring harness or replace components as necessary. See WIRING DIAGRAMS. If voltages are within specification, body ECU may be faulty.

Scheme 27

Scheme 28

DRIVER'S DOOR ELECTRONIC CONTROL UNIT

Note. Before attempting to diagnose malfunctions in driver door control system and driver's door Electronic Control Unit (ECU), see TROUBLE SHOOTING PROCEDURE (DRIVER DOOR CONTROL SYSTEM) under TROUBLE SHOOTING to ensure proper procedure is followed and driver's door ECU is able to communicate with rest of multiplex control system. Driver's door ECU may also be referred to as power window master switch.

Driver's door ECU is located on driver's door and is incorporated into the power window master switch. see scheme 3 Using voltmeter, check voltage between specified driver's door ECU terminals under specified condition. (Scheme 29) If voltage is not within specification, repair wiring harness or replace components as necessary. See WIRING DIAGRAMS. If voltages are within specification, driver's door ECU may be faulty.

Scheme 29