Suzuki Wagon R Manual page 418

INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Check CMP Sensor and connector for proper
installation.
Is CMP sensor installed properly and connector
connected securely?
3 Check Wire Harness and Connection.
1) Disconnect connector from CMP sensor.
2) Check for proper connection to CMP sensor at
each terminal.
3) If OK, turn ignition switch ON and check for voltage
at each terminal of sensor connection
disconnected. See Fig. 1.
Terminal "B+"
Terminal "Vout" : 4 – 5 V
Terminal "GND" :
Is check result satisfactory?
4 Was terminal "Vout" voltage out of specification in
Step 3 check?
5 Check Ground Circuit for Open.
1) Turn ignition switch OFF.
2) Check for continuity between "GND" terminal of
CMP sensor connector and engine ground.
Is continuity indicated?
6 Check CMP Sensor for Operation.
1) Remove CMP sensor from sensor case.
2) Remove metal particles on end face of CMP
sensor, if any.
3) Connect each connector to ECM and CMP sensor.
4) Turn ignition switch ON.
5) Check for voltage at terminal E21-11 of connector
connected to ECM by passing magnetic
substance (iron) while keeping approximately
1 mm (0.03 in.) gap with respect to end face of
CMP sensor. See Fig. 2 and 3.
Does voltage vary from low (0 – 1 V) to high (4 – 5 V)
or from high to low?
ACTION
: 10 – 14 V
– 0 V
YES
Go to Step 2.
Go to Step 3.
Go to Step 5.
"Or" 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.
ENGINE DIAGNOSIS 6-79
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Correct.
Go to Step 4.
"B/W" or "B" wire
open, short or poor
connection.
"B" wire open or poor
ground connection.
Replace CMP sensor.