Suzuki Jimny Service Manual page 406

Step
3 Check Wire Harness.
1) Disconnect MAP sensor connector with
ignition switch OFF.
2) Check for proper connection of MAP sensor
at "G" and "B/Bl" wire terminals.
3) If OK, then with ignition switch ON, check
voltage at each of "Lg/R" and "G" wire termi-
nals and body ground. See Fig. 2.
Is voltage about 4 – 6 V at each terminal?
4 Check MAP sensor according to "MAP Sensor
Individual Check" below.
Is it in good condition?
NOTE:
When battery voltage is applied to "Lg/R" wire, it is possible that MAP sensor is also faulty.
[A] Fig. 1 for Step 2 / [B] Fig. 2 for Step 3
Action
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-49
Yes
Go to Step 4.
"Lg/R" wire shorted to "G"
wire, "B/Bl" wire open,
poor E19-10 connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck.
No
"Lg/R" wire open or
shorted to ground circuit
or shorted to power circuit
(See NOTE), "G" wire
open or shorted to
ground, poor E19-26 con-
nection or E19-22 con-
nection.
If wire and connection are
OK, confirm that MAP
sensor is normal and then
substitute a known-good
ECM and recheck.
Replace MAP sensor.