| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Steering | Section: Power Assist Systems | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000001JTM004X |
| Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
IG Power Source Circuit |
DESCRIPTION
When the ignition switch is turned ON, the IG power source circuit supplies positive (+) voltage to the power steering ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
INSPECT FUSE (ECU-IG No. 2) |
|
(a) Remove the ECU-IG No. 2 fuse from the main body ECU. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
ECU-IG No. 2 (7.5 A) fuse |
Below 1 Ω |
Below 1 Ω |
|
|
2. |
CHECK WIRE HARNESS (POWER STEERING ECU - BATTERY AND BODY GROUND) |
|
(a) Disconnect the power steering ECU connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H38-6 (IG) - Body ground |
Ignition switch ON |
11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H38-2 (GND) - Body ground |
Always |
Below 1 Ω |
|
|
|