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 |
---|---|---|
E13-28 (PWMS) - Body ground |
Pattern select switch assembly pushed |
Below 1 Ω |
E13-28 (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 |
Check Bus 5 Lines for Short Circuit
DESCRIPTION
There may be a short circuit between the CAN main bus lines and/or CAN branch
lines when the resistance between terminals 15 (CA5H) and 16 (CA5L) of the central
gateway ECU (network gateway ECU) is below 54 Ω.
Detection Item
Trouble Area
Resi ...
Cursor or Map Rotates when Vehicle Stopped
PROCEDURE
1.
CHECK CONDITION
(a) Check with the customer if the vehicle has been turned by a turntable.
OK:
Vehicle has not been turned by a turntable.
HINT:
If the vehicle is turned on a turntable with the ignition switch ON,
the system ...
Installation
INSTALLATION
CAUTION / NOTICE / HINT
CAUTION:
Some of these service operations affect the SRS airbag system. Read
the precautionary notices concerning the SRS airbag system before servicing
(See page ).
If the side airbag was deployed, replace the front seat assembly with
...