Suzuki Jimny Service Manual page 420

INSPECTION
Step
1 Was "Engine Diag. Flow Table" performed?
2 Check Heater for Operation.
1) Check voltage at terminal E19-7. See Fig. 1.
2) Warm up engine to normal operating tem-
perature.
3) Stop engine.
4) Turn ignition switch ON and Check voltage
at terminal E19-7. See Fig. 1. Voltage
should be over 10 V.
5) Start engine, run it at idle and check voltage
at the same terminal. Voltage should be
below 1.9 V.
Are check results are specified?
3 Check Heater of Sensor-1.
1) Disconnect HO2S-1 coupler with ignition
switch OFF.
2) Check for proper connection to HO2S-1 at
"B/W" and "P/B" wire terminals.
3) If OK, then check heater resistance. See
Fig. 2.
Is it 5 – 6.4 Ω at 20 °C, 68 °F?
[A] Fig. 1 for Step 2 / [B] Fig. 2 for Step 3
Action
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-63
Yes
Go to Step 2.
Intermittent trouble Check
for intermittent referring to
"Intermittent and Poor
Connection" in Section
0A.
"P/B" wire open or
shorted to ground or poor
connection at E19-7. If
wire and connection are
OK, substitute a known-
good ECM and recheck.
No
Go to "Engine Diag. Flow
Table".
Go to Step 3.
Replace HO2S-1.