INSPECTION PROCEDURE HINT: • If diagnostic trouble code "22" (engine coolant temperature sensor circuit), "24" (intake air temperature sensor circuit) and "41" (throttle position sensor circuit) are output simultaneously, E2 (sensor ground) may be open. 1 Check voltage between VTA1, IDL1 and E2 of engine control module connector. P (1) Connect SST (check harness "A"). (See page EG-404) SST 09990-01000 (2) Turn ignition switch ON. (3) Disconnect the vacuum hose from the throttle body, then apply vacuum to the throttle opener. (See page EG-219) C Measure voltage between terminals VTA1, IDL1 and E2 of engine control module connector when the throttle valve is opened gradually from the closed condition. OK Terminal VTA1 - E2 IDL1 - E2 Throttle Valve Fully Closed 0.3 - 0.8 V 0 - 3.0 V Fully Open 3.2 - 4.9 V 9 - 14 V Hint The voltage should increase steadily in proportion to the throttle valve opening angle. ON SST ECM B 43, 65, 64 VTA1 E2 IDL1 BE6653 FI6911 NG OK Check for intermittent problems. (See page EG-399)