240 L4-2320cc 2.3L SOHC VIN 83 B230FD (1993)
Throttle Position Switch: Testing and Inspection
TP Switch Signal Faulty at Idle
EH. DIAGNOSTIC TROUBLE CODE (DTC) 1-3-3 MFI LH 2.4
1-3-3 Throttle position (TP) switch signal faulty on idling
DTC Conditions
The control module interprets a signal from the idle switch when engine speed is above 1500 rpm and at part loads indicating that the engine cannot idle.
Causes of fault:
Grounding in the control module wiring. The idle switch will not cut out.
Fault symptoms:
Above normal idling speed.
EH1
Checking The Idle Switch
-Turn the throttle pulley a little and listen to hear if the idle switch clicks.
If the switch clicks:
-DTM 2 EH2.
If the switch does not click:
-WC. Adjust the TP switch.
EH2
Diagnostic Test Mode (DTM) 2
-Go into DTM 2 and check the TP switch in accordance with CB1 and CB5.
