CL TYPE S V6-3.2L SOHC (2001)
Voltage Signal: Testing and Inspection
M/T Model
Alternator FR Signal Circuit Troubleshooting
M/T Model
1. Disconnect the alternator 4P connector.
2. Turn the ignition switch ON (II).
3. Measure voltage between ECM connector terminals A19 and A26.
Is there approx. 5 V?
YES - Go to step 4.
NO - Go to step 14.
4. Turn the ignition switch OFF.
5. Reconnect the alternator 4P connector.
6. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
7. Measure voltage between ECM connector terminals A19 and A26.
Does the voltage decrease when the headlights and rear defogger are turned on?
YES - The alternator FR signal is OK.
NO - Go to step 8.
8. Turn the ignition switch OFF.
9. Disconnect ECM connector A (31P).
10. Disconnect the alternator 4P connector.
11. Connect alternator 4P connector terminal No.4 to body ground with a jumper wire.
