DESCRIPTION
The ECM memory contains the programs for the normal and PWR shift patterns.
By following the programs corresponding to the signals from the combination switch assembly (pattern select switch), 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
INSPECT COMBINATION SWITCH ASSEMBLY (PATTERN SELECT SWITCH)
*1 | Combination Switch Assembly (Pattern Select Switch) |
Remove the combination switch assembly (pattern select switch).
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
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Result | |||
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NG |
REPLACE COMBINATION SWITCH ASSEMBLY (PATTERN SELECT SWITCH) Click here |
OK |
CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH - BODY GROUND)
*a | Front view of wire harness connector (to Combination Switch Assembly (Pattern Select Switch)) |
Disconnect the combination switch assembly (pattern select switch) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH - ECM)
*a | Rear view of wire harness connector (to ECM) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |