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DTC CONFIRMATION PROCEDURE
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Crank engine for 5 sec.
4) Check DTC and pending DTC.
TROUBLESHOOTING
Step
1
Was "Engine and Emission Control System Check?
2
Check CMP sensor and connector for proper installa-
tion.
Is CMP sensor installed properly and connector con-
nected securely?
3
Check Wire Harness and Connection.
1) Disconnect connector from CMP sensor.
2) Check for proper connection to CMP sensor at
"BLK/RED", "RED/YEL" and "YEL/BLK" wire termi-
nals.
3) If OK, turn ignition switch ON and check for volt-
age at "BLK/RED", "RED/YEL" and "YEL/BLK"
wire terminals of disconnected CMP sensor con-
nector. See Fig. 1.
Terminal "B+": 10 – 14 V
Terminal "Vout": 4 – 5 V
Terminal "GRD": 0 V
Is check result satisfactory?
4
Was terminal "Vout" voltage in Step 3 out of specifica-
tion?
5
Check Ground Circuit.
1) Turn ignition switch to OFF position.
2) Check for continuity between "YEL/BLK" wire ter-
minal of CKP sensor connector and engine
ground.
Is continuity indicated?
6
Check Engine Start Signal.
1) Check voltage between "C63-35" wire terminal of
ECM connector and engine ground with engine
cranking.
Does it voltage more than 6 V?
Action
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-121
Yes
Go to Step 2.
Go to Step 3.
Go to Step 5.
"RED/YEL" wire open,
short or poor connection.
If wire and connection
are OK, substitute a
known-good ECM and
recheck.
Go to Step 6.
Go to Step 7.
No
Go to "Engine and
Emission Control
System Check" in
this section.
Correct.
Go to Step 4.
"BLK/RED" and
"YEL/BLK" wire
open, short or poor
connection.
"YEL/BLK" wire open
or poor connection.
"BLK/YEL" wire cir-
cuit open or shorted
to ground.
If wire are OK, check
starting motor refer-
ring to "Starting
Motor Inspection" in
Section 6G.
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