FI SYSTEM DIAGNOSIS 4-53
Step 4
TO sensor check
1) Turn the ignition switch OFF.
2) Connect the ECM couplers and TO sensor coupler.
3) Insert the needle-point probes to the lead wire coupler.
4) Turn the ignition switch ON.
5) Measure the TO sensor voltage between the Br wire and B/Br
wire.
09900-25008: Multi circuit tester set
09900-25009: Needle-point probe set
Tester knob indication: Voltage (
)
TO sensor voltage (Normal):
0.4 – 1.4 V
(
+
terminal: Br –
-
terminal: B/Br)
6) Measure the voltage when it is leaned 65° and more, left and
right, from the horizontal level.
09900-25008: Multi circuit tester set
09900-25009: Needle-point probe set
Tester knob indication: Voltage (
)
TO sensor voltage (Leaning):
3.7 – 4.4 V
(
+
terminal: Br –
-
terminal: B/Br)
Is check result OK?
7) Install the TO sensor. (
4-92)
DTC “C24” (P0351) or “C25” (P0352): IGNITION SYSTEM MALFUNCTION
NOTE:
Refer to NO SPARK or POOR SPARK for details. (
9-21)
4
V
YES
Replace the ECM with a known good one, and
inspect it again.
NO
Replace the TO sensor with a new one.
4
V
65˚