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Terminal
Wire
No.
color
RED/
C37-20
CMP sensor signal
YEL
C37-21
PNK
CKP sensor signal
C37-22
—
C37-23
—
Engine coolant
C37-24 LT GRN
temp. (ECT)
sensor signal
BLK/
Intake air temp.
C37-25
YEL
(IAT) sensor signal
Mass air flow
GRN/
C37-26
(MAF) sensor
BLK
signal
Ground for MAF
C37-27
GRY
sensor
C37-28
—
BLU/
EVAP canister
C37-29
BLK
purge valve output
C37-30
BLK
Ground for ECM
C37-31
—
C37-32
—
C37-33
—
C37-34
—
C37-35
—
C37-36
—
C37-37
—
C37-38
—
C37-39
—
C37-40
—
C37-41
—
C37-42
—
Circuit
Normal voltage
0 – 1 V or 4 – 5 V
*0 – 0.6 V
4 – 5 V
("Reference
waveform No.15: "
and "Reference
waveform No.16: ")
0 – 1 V or 4 – 5 V
*4 – 5 V
0 – 0.6 V
("Reference
waveform No.15: "
and "Reference
waveform No.16: ")
—
—
—
—
3.3 – 3.8 V
1.38 – 1.72 V
0.40 – 0.53 V
3.18 – 3.67 V
1.32 – 1.65 V
0.46 – 0.60 V
0.5 – 1.5 V
1.5 – 2.0 V
("Reference
waveform No.17: ")
Below 0.3 V
—
—
10 – 14 V
*0 – 0.6 V
10 – 14 V
("Reference
waveform No.18: ")
Below 0.3 V
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Engine General Information and Diagnosis:
Condition
Ignition switch turned ON.
Engine running at idle
after warmed up engine.
Ignition switch turned ON.
Engine running at idle
after warming up engine.
—
—
Ignition switch turned ON,
ECT at 0 C, 32 F.
Ignition switch turned ON,
ECT at 50 C, 122 F.
Ignition switch turned ON,
ECT at 100 C, 212 F.
Ignition switch turned ON,
IAT at 0 C, 32 F.
Ignition switch turned ON,
IAT at 40 C, 104 F.
Ignition switch turned ON,
IAT at 80 C, 176 F.
Ignition switch turned ON
with engine at stop.
When engine running at
specified idle speed after
warmed up.
Ignition switch turned ON.
—
Ignition switch turned ON
with engine at stop.
Set EVAP canister purge
valve at 52% by using
"Misc Test" of scan tool.
Ignition switch turned ON.
—
—
—
—
—
—
—
—
—
—
—
—
1A-163
Remarks
—
Sensor signal is pulse.
Pulse frequency varies
depending on engine
speed.
(6 pulses are generated
per 1 camshaft revolution.)
—
Sensor signal is pulse.
Pulse frequency varies
depending on engine
speed.
(30 (36 – 6) pulses are
generated per 1
crankshaft revolution.)
—
—
—
—
—
—
—
—
Output signal is active low
duty pulse. Duty ratio
varies depending on
vehicle condition.
—
—
—
—
—
—
—
—
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—
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