Toyota Corolla (E120): Overhaul
1. Remove oil pump relief valve
- Remove the oil pump relief valve plug, oil pump relief valve spring and oil pump relief valve.
- Oil pump relief valve plug
- oil pump relief valve spring
- oil pump relief valve
2. Inspect oil pump assy
- Remove 3 screws and oil pump cover.
- Inspect the oil pump relief valve.
- Coat the valve with engine oil and check that it falls smoothly into the valve hole by it own weight.
- inspect the oil pump rotor sub–assembly.
- Coat the oil pump gear set with engine oil and place them into the oil pump body. Check that the rotors revolves smoothly.
- inspect rotor tip clearance.
- Using a feeler gauge, measure the clearance between
the drive and driven rotor tips.
Standard tip clearance: 0.040 – 0.160 Mm (0.0016 – 0.0063 In.)
- Inspect body clearance.
- Using a feeler gauge, measure the clearance between
the driven rotor and body.
Standard body clearance: 0.260 – 0.325 Mm (0.0102 – 0.0128 In.)
- Inspect rotor side clearance.
- Using a feeler gauge and precision straight edge,
measure the clearance between the rotors and precision
straight edge.
Standard side clearance: 0.025 – 0.071 Mm (0.0010 – 0.0028 In.)
- Install oil pump rotor sub–assembly.
- Coat the oil pump gear set with engine oil and place it into pump body with the marks facing the pump body cover side.
- Install oil pump rotor sub–assembly.
(1) Coat the oil pump gear set with engine oil and place it into pump body with the marks facing the pump body cover side.
3. Install oil pump relief valve
- Install the oil pump relief valve plug, oil pump relief valve
spring and oil pump relief valve.
Torque: 37 nvm (375 Kgf·cm, 27 ft·lbf)
- oil pump relief valve plug
- oil pump relief valve spring
- oil pump relief valve
Other materials:
Diagnostic trouble code chart
The inspection procedures are shown in the table below. This table allows
efficient and accurate troubleshooting
using the diagnostic trouble codes displayed in the diagnostic trouble code
chart. Proceed with
troubleshooting in accordance with the inspection procedures listed in the
diagnost ...
Malfunction in clock
Wiring diagram
Inspection procedure
1 Inspect fuse
Check the continuity in cig fuse.
check the continuity in dome fuse.
2 Inspect harness or connector
Check voltage.
Remove the clock assy with connector still connected.
Measure voltage between ter ...
How to proceed with troubleshooting
1 Vehicle brought to workshop
2 Customer problem analysis
3 Check and clear dtcs and freeze frame data
4 Problem symptom confirmation
Symptom does not occur: go to
step 5
Symptom occurs: go to step 6
5 Symptom simulation
6 Dtc check
There is no
output: go to step 7
There is outp ...