Section 06 ENGINE MANAGEMENT (RFI)
Subsection 03 (COMPONENT ADJUSTMENT, INSPECTION AND REPLACEMENT)
ECM CONNECTOR MEASUREMENT
PIN
RESISTANCE
@20°C(68°F)
A-11 A-27 2280 - 2736
smr2005-056-015_a
If not within specification, check wiring harness.
If wiring is faulty, repair/replace. If wiring is good,
measure resistance of sensor itself. If sensor is
faulty, replace it. If sensor is good, try a new ECM.
AIR PRESSURE SENSOR (APS)
F07F0HA
1
1. Air pressure sensor (APS)
Resistance Test
Disconnect the A connector from the ECM.
Using a multimeter, check the resistance on the
ECM connector as per table.
ECM CONNECTOR MEASUREMENT
PIN
RESISTANCE
@20°C(68°F)
A-3 A-4 3400 - 8200
A-4 A-18 2400 - 8200
smr2005-056-015_a
If not within specification, check wiring harness.
If wiring is faulty, repair/replace. If wiring is good,
measure resistance of sensor itself. If sensor is
faulty, replace it. If sensor is good, perform the
VOLTAGE TEST below.
Voltage Test
Check ECM voltage output to APS.
Disconnect connector from APS.
Remove and reinstall the safety lanyard to activate
the ECM.
Check the voltage readings from harness connec-
tor as follows.
APS CONNECTOR MEASUREMENT
PIN VOLTAGE
1
2 5Vdc
smr2005-056-016_b
138 smr2005-056
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