6E1-22
ENGINE AND EMISSION CONTROL SYSTEM
CODE NO.13 (P0120) TP SENSOR CIRCUIT
(SIGNAL VOLTAGE HIGH OR LOW)
1. ECM
2. ECM coupler
3. TP sensor
4. TP sensor coupler
5. To MAP sensor
6. To other sensors
NOTE:
When Code No.11 (P0105), 13 (P0120), 18 (P0110) and
19 (P0115) are indicated together, it is possible that
“B/G” wire is open or “E34-22” terminal connection are
poor.
STEP
ACTION
YES
NO
1
1) Disconnect TP sensor coupler with ignition
switch OFF.
2) Check voltage between “a” wire terminal of
TP sensor coupler and ground with ignition
switch ON.
Is voltage about 4 – 5 V?
Go to Step 2.
“Lbl” wire open or short.
Poor “E33-201” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
2
1) Check voltage between “b” wire terminal of
TP sensor coupler and ground with ignition
switch ON.
Is voltage about 4 – 5 V?
Go to Step 3.
“Gr” wire open or short.
Poor “E33-206” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
3
1) Connect “b” and “c” wire terminal of TP
sensor coupler using service wire.
2) Check voltage between “b” wire terminal of
TP sensor coupler and ground with ignition
switch ON.
Is voltage about 0 V?
Go to Step 4.
“B/G” wire open.
Poor “E34-22” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
4
1) Perform TP SENSOR INSPECTION in this
section.
Is TP sensor in good condition?
Poor connection of TP
sensor coupler termi-
nals.
If connection is OK,
substitute a known-
good ECM and re-
check.
Faulty TP sensor.
