Resetting Tps Initial Values; Reset Procedure Chart - TOHATSU TLDI 40 Service Manual

(3) Resetting TPS Initial Values

Use the following procedures to reset of the ECU and TPS in cases where
self-diagnosing indicates idling position errors for TPS1 and TPS2.
q When either the TPS or ECU is replaced:
w When the self-diagnosing function indicates [TPS idling position error]:
e When links and rod snap rings are replaced due to warpage and wear in the linkage:
r When the [TPS idling position error] indication appears after performing engine disassembly and
assembly operations:
t When engine is first put into service:
It is necessary to reset the ECU and the TPS if one of the above conditions occurs.
Reset Procedure
(1) With the throttle in the fully closed state, adjust the cables or wires in order to advance the advancer
arm to the fully closed stopper position.
Then move the throttle several times to confirm that the arm is snug against the fully closed stopper.
(2) Perform the following procedures with the throttle in the fully closed state. (Refer to the chart below)
q Turned the key switch to the On position. Within one second after the beep (buzzer) stops
sounding, disconnect the stop switch lock.
w Wait approximately 5 to 10 seconds (7 seconds to be exact); then pull the red knob on the stop
switch for 0.5 second or less and release it.
e Wait another 5 to 10 seconds (7 seconds to be exact); then pull the red knob on the stop switch
again for 0.5 second or less and release it.
r The sounding of 3 short beeps approximately 5 seconds after the knob is returned indicates a
successful reset of the TPS and ECU.
If no beeps are heard, replace stop switch lock. And start again.
t Next, turn the key switch to OFF, confirm that the throttle (advancer arm) is at the fully closed
position; then turn the key switch to ON.

Reset Procedure Chart

Key switch
Stop switch
ON
OFF
Beeping stops
ON
1s
5 to 10 s
OFF
Disconnect the stop switch lock.
5 s
5 to 10 s
Pull the red knob for no
more than 0.5s. and release.
9-22
Confirm advancer arm
is at fully closed
position.
Three short beeps
indicate TPS and ECU
reset successful.