Suzuki SX4 Service Manual page 168

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1A-118 Engine General Information and Diagnosis:
Step
3
Wire harness and connection check
1) Disconnect connector from CMP sensor.
2) Check for proper connection to CMP sensor at "BLK/
RED", "RED/YEL" and "BLK/ORN" wire terminals.
3) If OK, turn ON ignition switch and check voltage at "BLK/
RED", "RED/YEL" and "BLK/ORN" wire terminals of
disconnected CMP sensor connector.
CMP sensor voltage
Terminal "B+": 10 – 14 V
Terminal "Vout": 4 – 5 V
Terminal "GND": 0 V
For engine without VVT system
For engine with VVT system
Is check result satisfactory?
4
Was terminal "Vout" voltage in Step 3 within specification?
5
Ground circuit check
1) Turn ignition switch to OFF position.
2) Measure resistance between "BLK/ORN" wire terminal
of CMP sensor connector and engine ground.
Is measured resistance value less than 3
6
Was terminal "B+" voltage in Step 3 within specification?
Action
I4RS0B110031-01
I4RS0B110094-01
?
Yes
Go to Step 7.
Go to Step 5.
Go to Step 6.
Go to Step 7.
No
Go to Step 4.
"RED/YEL" wire is open
or shorted to ground /
power supply circuit.
If wire and connection
are OK, substitute a
known-good ECM and
recheck.
"BLK/ORN" wire is open
or high resistance
circuit.
"BLK/RED" wire is open
circuit. If wire and
connection are OK,
substitute a known-
good ECM and recheck.

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