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
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