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4-46 FI SYSTEM DIAGNOSIS
Is the continuity OK?
9) After repairing the trouble, clear the DTC using SDS tool.
(4-27)
Step 1 (When indicating P0120-L:)
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. (5-3)
3) Check the TP sensor coupler for loose or poor contacts.
If OK, then check the TP sensor lead wire continuity.
4) Disconnect the TP sensor coupler.
5) Check the continuity between P/B wire A and ground.
6) Also, check the continuity between P/B wire A and B/Br wire
C. If the sound is not heard from the tester, the circuit condi-
tion is OK.
7) Disconnect the ECM coupler.
8) Check the continuity between P/B wire A and terminal 8.
9) Also, check the continuity between R wire B and terminal A.
TPS 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?
10)After repairing the trouble, clear the DTC using SDS tool.
(4-27)
YES Go to Step 2.
NO P/B wire shorted to VCC, or B/Br wire open
1
1
When using the multi-circuit tester, do not storongly
touch the terminal of the ECM coupler with a needle
pointed tester probe to prevent the terminal damage
or terminal bend.
YES Go to Step 1 (4-44) and go to Step 2.
NO
R wire or P/B wire open, or P/B wire shorted to
ground
(Black)
(Gray)
1
!
ECM couplers (Harness side)