Engine Basic Inspection - Suzuki Jimny Service Manual

Engine basic inspection

This check is very important for troubleshooting when ECM has detected no DTC and no abnormality has been
found in visual inspection.
Follow the flow table carefully.
Step
1 Was "Engine Diag. Flow Table" performed?
2 Check battery voltage.
Is it 11 V or more?
3 Is engine cranked?
4 Does engine start?
5 Check idle speed as follows :
1) Warm up engine to normal operating temp.
2) Shift transmission to neutral position for M/T
("P" position for A/T).
3) All of electrical loads are switched off.
4) Check engine idle speed with scan tool.
See Fig. 1.
Is it 650 – 750 r/min (700 – 800 r/min. for A/T
vehicle)?
6 Is SUZUKI scan tool available?
7 Check ignition timing as follows :
1) Connect test switch terminal (2) of monitor
coupler (1) to ground. See Fig. 2.
2) Remove air cleaner bolt and crips and shift
air cleaner position to observe ignition tim-
ing.
3) Using timing light (1), check initial ignition
timing.
See Fig. 4.
Is it 5° ± 3° BTDC at specified idle speed?
8 Check ignition timing as follows :
1) Select "MISC" mode on SUZUKI scan tool
and fix ignition timing to initial one. See Fig.
3.
2) Remove air cleaner bolt and crips and shift
air cleaner position to observe ignition tim-
ing.
3) Using timing light (1), check initial ignition
timing. See Fig. 4.
Is it 5° ± 3° BTDC at specified idle speed?
9 Check immobilizer system malfunction as fol-
lows (if equipped) :
1) Check immobilizer indicator lamp or MIL
(malfunction indicator lamp) for flashing.
Is it flashing when ignition switch is turned to
ON position?
Action
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-21
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
Go to Step 6.
Go to Step 8.
Go to "Engine Diagnosis
Table".
Go to "Engine Diagnosis
Table".
Go to "Diagnosis" in Sec-
tion 8G.
No
Go to "Engine Diag. Flow
Table".
Charge or replace battery.
Go to "Diagnosis" in Sec-
tion 6G.
Go to Step 9.
Go to "Engine Diagnosis
Table".
Go to Step 7.
Check ignition control
related parts referring to
Section 6F.
Check ignition control
related parts referring to
Section 6F.
Go to Step 10.