Suzuki GA413 Service Manual page 430

6E-20 ENGINE AND EMISSION CONTROL SYSTEM
DTC NO.11 MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT
(SIGNAL VOLTAGE LOW, HIGH OR PERFORMANCE PROBLEM)
WIRING DIAGRAM
TROUBLE SHOOTING
CAUTION:
Do not connect from terminal "b" to "c" of MAP sensor connector.
STEP
1 Did you perform "ENGINE DIAGNOSTIC FLOW
TABLE" in Section 6?
2 1) With ignition switch OFF position, disconnect
MAP sensor electrical connector.
2) Turn ignition switch ON position, leaving engine
OFF.
3) Measure voltage from terminal "c" of MAP sen-
sor connector to ground.
Is voltage within 4-5V?
3 1) Measure voltage from terminal "a" of MAP sen-
sor connector to ground.
Is voltage within 4-5V?
4 1) Connect jumper wire from terminal "a" to "b" of
MAP sensor connector.
2) Measure voltage from terminal "a" of MAP sen-
sor connector to ground.
Is voltage below 0.15V?
ACTION YES
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
1. MAP sensor
2. MAP sensor connector
3. ECM connector (B)
4. ECM
NO
Go to "ENGINE DIAG-
NOSTIC FLOW TABLE".
"Lg/R" wire open or
short.
Poor connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and
recheck.
"Lg/Y" wire open or
short.
Poor connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and
recheck.
"Bl/Y" wire open.
Poor connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and