Toyota Corolla (E120): Circuit description
Monitor description
The ecm commands gearshift by turning the shift solenoid valves ”on/off”. When there is an open or short circuit in any shift solenoid valve circuit, the ecm detects the problem and the mil comes on. Illuminating the mil, the ecm performs the fail–safe and turns the other shift solenoid valves in good condition ”on/off” (in case of an open or short circuit, the ecm stops sending current to the circuit.).
Monitor strategy
Typical enabling condition
Typical malfunction thresholds
Component operating range
Wiring diagram
Other materials:
Inspection procedure
1 Inspect ecm(+b voltage)
Turn the ignition switch on.
measure the voltage between the terminals of the e4 and
e6 ecm connectors.
Standard:
2 Check harness and connector(ecm – body ground)
Disconnect the e4 ecm connector.
check the resistance between the wire ...
Inspection
1. Intake air flow meter sub–assy
Inspect the intake air flow meter resistance.
Using an ohmmeter, measure the resistance between
terminals tha and e2.
Resistance:
at –20 c (–4 f) 13.6 To 18.4 KΩ
at 20 c (68 f) 2.21 To 2.69 KΩ
at 60 c (140 f) 0.49 To 0.67 ...
Entire combination meter does not operate
Wiring diagram
Inspection procedere
1 Check fuse
Check that continuity exists of dome fuse.
check that continuity exists of gauge fuse.
check that continuity exists of am1 fuse.
2 Inspect combination meter assy
Check continuity.
Disconnect the ” ...