DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT PATTERN SELECT (PWR) SWITCH
CHECK HARNESS AND CONNECTOR (PATTERN SELECT (PWR) SWITCH - BODY GROUND)
CHECK HARNESS AND CONNECTOR (PATTERN SELECT (PWR) SWITCH - ECM)
AUTOMATIC TRANSMISSION SYSTEM (for 1GR-FE) - Pattern Select Switch Power Mode Circuit
DESCRIPTION
The ECM memory contains the programs for the normal and power shift patterns and lock-up pattern.
By following the programs corresponding to the signals from the pattern select switch, the park/neutral position switch and other various sensors, the ECM switches the solenoid valves on and off, and controls the transmission gear change and the lock-up clutch operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
When the pattern select (PWR) switch is pushed, switch contact is made and power mode is selected. To cancel power mode, push the pattern select (PWR) switch once again.
| 1.INSPECT PATTERN SELECT (PWR) SWITCH |
Remove the suspension control switch ().
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Switch Condition | Specified Condition |
| 16 (P) - 20 (E) | Pattern select (PWR) switch on | Below 1 Ω |
| 16 (P) - 20 (E) | Pattern select (PWR) switch off | 10 kΩ or higher |
Text in Illustration| *a | Component without harness connected
(Suspension Control Switch) |
| | REPLACE PATTERN SELECT (PWR) SWITCH (SUSPENSION CONTROL SWITCH) ()
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| 2.CHECK HARNESS AND CONNECTOR (PATTERN SELECT (PWR) SWITCH - BODY GROUND) |
Disconnect the suspension control switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| V4-20 (E) - Body ground | Always | Below 1 Ω |
Text in Illustration| *a | Front view of wire harness connector
(to Suspension Control Switch) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.CHECK HARNESS AND CONNECTOR (PATTERN SELECT (PWR) SWITCH - ECM) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Switch Condition | Specified Condition |
| A38-51 (PWR) - Body ground | Pattern select (PWR) switch on | Below 1 Ω |
| A38-51 (PWR) - Body ground | Pattern select (PWR) switch off | 10 kΩ or higher |
Text in Illustration| *a | Front view of wire harness connector
(to ECM) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| OK | |
| |
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE ()
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