G 30 Van V8-379 6.2L DSL VIN C FI (1992)
completes circuit.
4. Checks for TPS signal. If signal to ECM is correct, fault is in ECM connection or ECM. If TPS signal to ECM is incorrect (voltage), proper
operation will not occur.
5. Checks for ground in circuit to ECM terminal "C5". Normally, light should be "OFF."
6. Checks for voltage to terminal "A" of TCC connector. Light should normally be "ON."
7. Checks for complete circuit from voltage to ground, via TCC test terminal in ALDL. Normally, light should go "ON," if harness is good.
Diagnostic Aids:
Solenoid coil resistance must measure more than 20 ohms. Less resistance will cause early failure of the ECM "DRIVER." Using an ohm meter,
check the solenoid coil resistance of all ECM controlled solenoids and relays, before installing a replacement ECM. Replace any solenoid, or
relay, that measures less than 20 ohms resistance.
