DR-1B Output Circuits of ECM Controlled Components

Complete Driveability Test 1, Step A before procedding.

1. Connect diagnostic read-out tool to engine test connector.
2. Place system into ATM Test Mode 04.
3. Test Code 04:
a. If radiator fan is turning on and off every 2 seconds, press and hold ATM button as follows:
Without A/C, until Test Code 07 appears;
With A/C, until Test Code 05 appears.
b. If radiator fan does not turn on and off, and relay is clicking, repair radiator fan circuit.
c. If radiator fan does not turn on and off, and relay is not clicking, replace relay.
4. Test Code 05:
a. If A/C cutout relay is clicking every 2 seconds, press and hold ATM button until Test Code 07 appears.
b. If A/C cutout relay is not clicking, replace relay.
5. Test Code 07:
a. If canister purge solenoid is clicking, press and hold ATM button until Test Code 10 appears.
b. If canister purge solenoid is not clicking, replace solenoid.
6. Test Code 10:
a. If baro read solenoid is clicking, press and hold the ATM key until test code 11 appears.
b. If baro read solenoid is not clicking, replace solenoid.
7. Test Code 11:
a. If wastegate solenoid is clicking, proceed to Test 1 step C.
b. If wastegate solenoid is not clicking, replace solenoid.