Suzuki RA410, Manual

Page: 381 / 761

6E1-16 ENGINE AND EMISSION CONTROL SYSTEM
DTC NO. 11 MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT
(SIGNAL VOLTAGE LOW, HIGH OR PERFORMANCE PROBLEM)
WIRING DIAGRAM
Or
Lg/R
Gr/R
C14
A8
A19
3 1. Manifold absolute pressure (MAP) sensor
2. MAP sensor connector
3. ECM/PCM
TROUBLESHOOTING
CAUTION:
Do not connect from terminal “a” to “c” of MAP sensor connector.
When code No. 11, 13, 14, 18 and 19 are indicated together, it is possible that “Or” wire is open or C14 terminal
connections are poor.
STEP ACTION YES NO
1 Did you perform ENGINE DIAGNOSIS FLOW
TABLE in SECTION 6?
Go to Step 2. Go to ENGINE DIAG-
NOSIS FLOW TABLE in
SECTION 6.
2 1) With ignition switch at OFF position, disconnect
MAP sensor connector.
2) Turn ignition switch to ON position, without run-
ning engine.
3) Measure voltage from terminal “c” of MAP sen-
sor connector to ground.
Is voltage within 4 – 5V?
Go to Step 3. “Gr/R” wire open or
short.
Poor connection of
ECM/PCM connector
terminal.
If OK, substitute a
known-good ECM/PCM
and recheck.
3 1) Measure voltage from terminal “b” of MAP sen-
sor connector to ground.
Is voltage within 4-5V?
Go to Step 4. “Lg/R” wire open or
short.
Poor connection of
ECM/PCM connector
terminal.
If OK, substitute a
known-good ECM/PCM
and recheck.
4 1) Connect jumper wire from terminal “a” to “b” of
MAP sensor connector.
2) Measure voltage from terminal “b” of MAP sen-
sor connector to ground.
Is voltage below 0.15V?
Go to Step 5. “Or” wire open.
Poor connection of
ECM/PCM connector
terminal.
If OK, substitute a
known-good ECM/PCM
and recheck.