DESCRIPTION
This is the power source for the tire pressure warning ECU.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
INSPECT FUSE (ECU-IG NO. 2) |
(a) Remove the ECU-IG No. 2 fuse from the driver side junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
ECU-IG No. 2 fuse |
Always |
Below 1 Ω |
NG |
REPLACE FUSE |
|
2. |
INSPECT IGNITION RELAY NO. 1 |
(a) Remove the IG1 relay from the driver side junction block. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3 - 5 |
Battery voltage is not applied between terminals 1 and 2 |
10 kΩ or higher |
Battery voltage is applied between terminals 1 and 2 |
Below 1 Ω |
NG |
REPLACE IGNITION RELAY NO. 1 |
|
3. |
CHECK HARNESS AND CONNECTOR (ECU - BATTERY AND BODY GROUND) |
(a) Disconnect the D31 ECU connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
D31-7 (IG) - Body ground |
Ignition switch ON |
11 to 14 V |
Ignition switch off |
Below 1 V |
*1 |
Front view of wire harness connector (to Tire Pressure Warning ECU) |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D31-9 (GND) - Body ground |
Always |
Below 1 Ω |
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Removal
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable
is reconnected (See page ).
2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM
3. REMOVE CO ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column ...
Lubrication system
- Engine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use Toyota approved
“Toyota Genuine Motor Oil” or equivalent to satisfy the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recomm ...