DESCRIPTION
The ECM memory contains the programs for the normal and PWR shift patterns.
By following the programs corresponding to the signals from the pattern select switch assembly, park/neutral position switch and other various sensors, the ECM switches the shift solenoid valves on and off, and controls the transmission gear ratio.
WIRING DIAGRAM
PROCEDURE
1. |
INSPECT PATTERN SELECT SWITCH ASSEMBLY |
(a) Remove the pattern select switch assembly (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
1 (E) - 4 (B) |
Pattern select switch assembly pushed |
Below 1 Ω |
1 (E) - 4 (B) |
Pattern select switch assembly not pushed |
10 kΩ or higher |
*1 |
Pattern Select Switch Assembly |
NG | ![]() |
REPLACE PATTERN SELECT SWITCH ASSEMBLY |
|
2. |
CHECK HARNESS AND CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND) |
(a) Disconnect the pattern select switch assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
P20-1 (E) - Body ground |
Always |
Below 1 Ω |
*a |
Front view of wire harness connector (to Pattern Select Switch Assembly)) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - ECM) |
(a) Disconnect the ECM connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
E21-14 (PWMS) - Body ground |
Pattern select switch assembly pushed |
Below 1 Ω |
E21-14 (PWMS) - Body ground |
Pattern select switch assembly not pushed |
10 kΩ or higher |
*a |
Rear view of wire harness connector (to ECM) |
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Reservoir Level Switch Disconnected (C1453,C1454)
DESCRIPTION
The brake fluid level warning switch sends the appropriate signal to the skid
control ECU (master cylinder solenoid) when the brake fluid level drops.
DTC Code
DTC Detection Condition
Trouble Area
C1453
With the ECU termina ...
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
...
Replacement
REPLACEMENT
PROCEDURE
1. REPLACE INTAKE VALVE GUIDE BUSH
(a) Heat the cylinder head to 80 to 100°C (176 to 212°F).
(b) Place the cylinder head on wooden blocks.
(c) Using SST and a hammer, tap out the intake valve guide bushes.
SST: 09201-10000
09201-01050
SST: 09950-70010 ...