Toyota Tacoma manuals

Toyota Corolla Repair Manual: System description

The ecm uses signals from the vehicle speed sensor and crankshaft position sensor to detect the actual gear position (1st, 2nd, 3rd or o/d gear).

Then the ecm compares the actual gear with the shift schedule in the ecm memory to detect the mechanical trouble of the shift solenoid valves, the valve body or automatic transaxle (clutch, brake or gear etc.).

Monitor description

Monitor description

The ecm commands gear shifts by turning the shift solenoid valves on/off. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ecm detects the actual gear position (1st, 2nd, 3rd or o/d gear position). When the gear position commanded by the ecm and the actual gear position are not same, the ecm illuminates the mil.

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Typical malfunction thresholds

Typical malfunction thresholds

Inspection procedure

Shift solenoid b performance (shift solenoid valve s2)
Dtc p0756 shift solenoid b performance (shift solenoid valve s2) ...

Inspection procedure
1 Inspect shift solenoid valve(s2) Remove the shift solenoid valve s2.  measure the resistance according to the value(s) in the table below. Standard: Connect the positive (+ ...

Other materials:

Initialization
1. Reset memory Caution: perform the reset memory (at initialization) when replacing the automatic transaxle assy, engine assy or ecm. Notice: handheld tester only Turn the ignition switch off.  connect the handheld tester to the dlc3.  turn the ignition switch to the on ...

Basic inspection
When the malfunction is not confirmed in the dtc check, troubleshooting should be carried out in all the possible circuits considered as causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location causing the problem can be found ...

Problem symptoms table
Hint: if a normal code is displayed during the dtc check but the trouble still occurs, check the circuits for each symptom in the order given in the charts on the following pages and proceed to the page given for troubleshooting. The matrix chart is divided into 3 chapters. If the instruc ...

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