Suzuki GRAND VITARA XL-7 Owner's Manual page 248

DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
CMP sensor signal is not inputted for 3 sec. even though
engine start signal is being inputted.
or
REF signal pattern is incorrect while POS signal varies.
or
POS signal voltage too high or too low.
DTC CONFIRMATION PROCEDURE
NOTE:
Check to make sure that following condition is satisfied when using this "DTC CONFIRMATION PRO-
CEDURE".
• Intake air temp. : – 8°C (18°F) or higher
• Engine coolant temp. : – 8 – 110°C (18 – 230°F)
• Altitude (barometric pressure) : 2400 m, 8000 ft or less (560 mmHg (75 kPa) or more)
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3) Crank engine for 3 seconds or more and keep it at idle for 1 min.
4) Check DTC by using scan tool.
TROUBLESHOOTING
NOTE:
If starter circuit is open (i.e., starter signal circuit is OK but starter fails to run), this DTC is stored in
memory at starter switch ON, even through CMP sensor is in good condition.
When starter motor fails to run and this DTC appears, check starter circuit first.
Step
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Is engine cranked?
3 Is there DTC P1500 (Engine starter signal circuit)? Go to DTC P1500 Diag.
4 CMP sensor power supply voltage check :
1) With ignition switch OFF, disconnect CMP sen-
sor coupler.
2) With ignition switch ON, check voltage between
C09-2 and C09-1 terminal. (See Fig.)
Is the voltage 10 – 14 V?
ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-87
Action
TROUBLE AREA
CMP sensor circuit
CMP sensor
Engine starter signal circuit
ECM (PCM)
Yes
Go to Step 2.
Go to Step 3.
Flow Table.
Go to Step 5.
No
Go to "ENGINE DIAG.
FLOW TABLE" in this
section.
Go to Section 6G.
Go to Step 4.
Faulty "BLU/BLK" wire
and/or "GRY/YEL" wire.