Toyota Corolla Repair Manual: Throttle body assy
Components

Removal & installation and disassembly & reassembly
1. Drain coolant
2. Remove cylinder head cover no.2

- Remove 2 nuts, 2clips and the cylinder head cover no. 2.
3. Remove air cleaner cap sub–assy

- Disconnect the maf connector.
- disconnect the vsv connector.
- disconnect 3 vacuum hoses, as shown in the illustration.
- loosen an air cleaner hose clump and disconnect an air
cleaner hose no. 1.
- remove the air cleaner cap.
4. Remove air cleaner hose no.1
5. Separate accelerator control cable assy
6. Remove throttle body assy

- Disconnect an throttle position sensor connector.
- disconnect a throttle body isc valve assy connector.
- disconnect a pcv hose.

- Disconnect 2 water by–pass hoses.

- Remove 5 bolts, 2 nuts, throttle body bracket and throttle
body. (Transaxle m/t)

- Remove 3bolts, 2nuts and throttle body. (Transaxle a/t)

- Remove 2 bolts and accelerator cable bracket.
7. Remove E.F.I. Throttle position sensor

- Remove 2 screws and the throttle position sensor as
shown in the illustration.
8. Remove thlottle body idle speed controlvalve assy

- Remove 3 screws and the idle speed control valve assy.
- remove the gasket from the throttle body.
9. Install thlottle body idle speed control valve assy
- Install a new gasket on the throttle body.
- install the idle speed control valve assy with 3 screws.
Torque: 3.7 Nvm (38 kgf·cm, 33 in.Vlbf)
10. Install E.F.I. Throttle position sensor

- Check that the throttle valve is fully close.
- insert the throttle position sensor to the throttle body with
it turned counterclockwise by 30 to 90 against the fully
close valve position.
- by turning the throttle position sensor clockwise, tighten
2 screws.
Torque: 2.0 Nvm (20 kgf·cm, 18 in.Vlbf)
11. Install throttle body assy

- Install the accelerator control bracket with 2 bolts.
Torque: 13 nvm (133 kgf·cm, 9.6 Ftvlbf)

- Install a new gasket on the intake manifold, as shown in
the illustration.

- Install the throttle body with 5 bolts and 2 nuts.(Transaxle
m/t)
torque:
a 30 nvm (306 kgf·cm, 22 ftvlbf)
b 13 nvm (133 kgf·cm, 9.6 Ftvlbf)

- Install the throttle body with 3 bolts and 2 nuts.(Transaxle
a/t)
torque: 30 nvm (306 kgf·cm, 22 ftvlbf)

- Connect 2 water by–pass hoses to the throttle body.

- Connect the pcv hose to the throttle body.
- connect the throttle body idle speed control valve assy
connector to the throttle body.
- connect the throttle position sensor connector to the
throttle body.
12. Install air cleaner cap sub–assy
- Install the air cleaner cap.
- connect the air cleaner hose.

- Connect 3 vacuum hoses, as shown in the illustration.
- connect the vsv connector.
- connect the intake air flow meter connector.
13. Install cylinder head cover no.2

- Install the cylinder head cover no. 2 With 2 nuts and 2
clips.
Torque: 7.0 Nvm (71 kgf·cm, 62 in.Vlbf)
14. Add coolant
15. Check engine coolant leak
1. Intake air flow meter sub–assy
Inspect the intake air flow meter resistance.
Using an ohmmeter, measure the resistance between
terminals tha and e2.
Resistance:
at –20 c ( ...
Replacement
1. Disconnect battery negative terminal
2. Remove glove compartment door assy
3. Remove ecm
Remove the 2 clips using a clip remover. Then, open the
cover.
Disconnect the ...
Other materials:
Connecting a Bluetooth® device
Up to 5 Bluetooth® devices (Phones (HFP) and audio players (AVP)) can be registered.
If more than 1 Bluetooth® device has been registered, select which device to
connect to.
1 Press the “SETUP” button.
2 Select “Bluetooth*”.
*: Bluetooth is a registered trademark of Bluetooth SIG, Inc.
3 Sele ...
How to proceed with troubleshooting
1 Vehicle brought to workshop
2 Customer problem analysis
3 Check and clear dtc
4 Problem symptom confirmation
5 Symptom simulation
6 Dtc check
7 Dtc chart
8 Problem symptoms table
9 Circuit inspection
10 Identification of problem
11 Parts inspection
12 Repair
1 ...
Diagnostic trouble code chart
Notice:
when removing the part, turn the ignition switch to off.
Hint:
using sst 09843–18040, it connect the terminal tc and cg of dlc3.
If any abnormality is not found when inspecting parts, inspect the ecu and
ground points for poor contact.
If a malfunction code is displayed during t ...