EVAP Leak Check Pressure Sensor (Combine with BARO Sensor) On-Vehicle Inspection: Notes

CAUTION: Make sure that connection is made between correct terminals. Wrong connection can cause damage to EVAP leak check pressure sensor in EVAP leak check module.

Initial (barometric) pressure check

With ignition mode of keyless push start system in "OFF", connect special tool between ECM and ECM connectors. For connecting procedure, refer to Step 1) and 2) of "Voltage Check" under INSPECTION OF ECM AND ITS CIRCUITS .
Push engine switch to change ignition mode of keyless push start system to "ON".

Check EVAP leak check pressure sensor output voltage (barometric pressure signal voltage) between "E01-8" terminal and ground, according to the following table.

EVAP leak check pressure sensor output voltage for initial (barometric) pressure at 20 - 30 °C (68 - 86 °F))

BAROMETRIC PRESSURE OUTPUT VOLTAGE REFERENCE CHART

Altitude (Reference)		Barometric pressure		Output voltage
(ft)	(m)	(mmHg)	(kPa)	(V)
0 - 2000	0 - 610	760 - 707	100 - 94	3.605 - 3.278
2001 - 5000	611 - 1524	707 - 634	94 - 85	3.278 - 2.788
5001 - 8000	1525 - 2438	634 - 567	85 - 76	2.788 - 2.297
8001 - 10000	2439 - 3048	567 - 526	76 - 70	2.297 - 1.970

Fig 1: Checking EVAP Leak Check Pressure Sensor Output Voltage Between E01-8 Terminal And Ground

Courtesy of SUZUKI OF AMERICA CORP.

If sensor output voltage is out of specification, check wire harness and connections.

If check results of the wire harness and connections are OK, replace EVAP leak check module and EVAP canister as assembly.

If output voltage is within specified value, perform "REFERENCE VACUUM PRESSURE (REFERENCE ORIFICE VACUUM) CHECK ".