1.CHECK O/D INDICATOR LAMP FUNCTION
Check O/D OFF indicator lamp turns ON for approx. 2 seconds when ignition switch turns ON.
Is the inspection results normal?
YES >> GO TO 2.
NO >> Go to TM, "Diagnosis Procedure".
2.CHECK O/D SWITCH FUNCTION
Is the inspection results normal?
YES >> INSPECTION END
NO >> Go to TM, "Diagnosis Procedure".
1.CHECK OVERDRIVE CONTROL SWITCH CIRCUIT

Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK OVERDRIVE CONTROL SWITCH
Check overdrive control switch. Refer to TM, "Component Inspection (Overdrive Control Switch)".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI "Intermittent Incident".
NO >> Repair or replace the malfunctioning parts.
3.CHECK GROUND CIRCUIT
Check the continuity between A/T shift selector harness connector terminal
and ground. 
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.CHECK CIRCUIT BETWEEN COMBINATION METER AND A/T SHIFT SELECTOR (PART 1)

Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.CHECK CIRCUIT BETWEEN COMBINATION METER AND A/T SHIFT SELECTOR (PART 2)
Check the continuity between combination meter harness connector terminal and
ground. 
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace the malfunctioning parts.
6.CHECK COMBINATION METER INPUT SIGNAL
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI "Intermittent Incident".
NO >> Replace combination meter. Refer to MWI "Removal and Installation".
Component Inspection (Overdrive Control Switch)
1.CHECK OVERDRIVE CONTROL SWITCH
Check the continuity between wires of selector lever knob (1) 

Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the selector lever knob. Refer to TM "Removal and Installation".
Main power supply and ground circuitDiagnosis Procedure 1.CHECK TCM POWER CIRCUIT 1 Turn the ignition switch OFF. Disconnect the TCM connector. Check the voltage between the TCM harness connector terminals and ground. ...

Component Function Check 1.CHECK O/D OFF INDICATOR LAMP FUNCTION Check O/D OFF indicator lamp turns ON for approx. 2 seconds when ignition switch turns ON. Is the inspection results normal? YE ...
Electric ignition system
ELECTRIC IGNITION SYSTEM : System Diagram
ELECTRIC IGNITION SYSTEM : System Description
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*3
Piston position
Ignition timing control
Igni ...
U1000 Can COMM circuit
Description
CAN (Controller Area Network) is a serial communication line for real-time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent malfunction
detection ability.
Many electronic control units are equipped onto a vehicle, an ...