FI SYSTEM DIAGNOSIS 12-33
7) Insert the needle-pointed probes to the lead wire coupler.
8) Check the continuity between Yellow wire
C
and terminal
5
.
9) Also, check the continuity between B/Br wire
B
and terminal
N
.
TP sensor lead wire continuity: Continuity (
)
09900-25008: Multi circuit tester set
09900-25009: Needle-pointed probe set
Tester knob indication: Continuity test (
)
Is the continuity OK?
Step 1 (When indicating P0120-L:)
1) Stop the engine.
2) Check the TP sensor coupler
1
for loose or poor contacts.
If OK, then check the TP sensor lead wire continuity.
3) Disconnect the TP sensor coupler.
4) Remove the fuel tank. (
13-2, -3)
5) Disconnect the ECM coupler. (
12-60)
6) Check the continuity between Yellow wire
C
and ground.
7) Also, check the continuity between Yellow wire
C
and B/Br
wire
B
. If the sound is not heard from the tester, the circuit
condition is OK.
YES
Go to Step 2.
NO
Yellow wire shorted to VCC, or B/Br wire open.
1
ECM coupler (Harness side)
1
1
