DR-1A CODE to DR TEST Chart (Checking for Fault Codes)

1. Connect diagnostic read-out tool to engine test connector.
2. Within 5 seconds, cycle ignition on and off two times, then turn on and record all codes. If code sequence is 15-17-21-33-51 or 52, proceed to step 9.
3. Turn ignition switch Off, then disconnect and reconnect battery connector.
4. Start engine and let run for 2 minutes. Do not depress accelerator to start engine.
5. Raise engine speed to 2000 RPM for 10 seconds, then return to idle.
6. On models with automatic transmission, cycle gear selector, then turn A/C on and off, if equipped.
7. Turn engine Off, then place system in Diagnosis Test Mode and record all codes.
8. If codes displayed are same as those in step 2, proceed to step 9. If codes are not repeated, proceed to Test 1 step P.
9. Initiate appropriate diagnosis for the following fault code displays:
a. Code sequence 88-12-55 indicates no fault codes are present. Proceed to Test 1 step B.
b. Code sequence 88-12-13-55, 88-12-14-55 or 88-12-13-14-55 indicates a fault in MAP sensor circuit. Proceed to Test 2.
c. Code sequence 88-12-15-55 indicates a fault in speed sensor circuit. Proceed to Test 3.
d. Code sequence 88-11-12-16-55 indicates a fault in battery voltage/SMEC memory circuit. Proceed to Test 23.
e. Code sequence 88-12-17-55 indicates engine is running to cool. Check engine for possible bad thermostat.
f. Code sequence 88-12-21-55 indicates a fault in oxygen sensor circuit. Proceed to Test 4.
g. Code sequence 88-12-22-55 or 88-12-17-22-55 indicates a fault in engine coolant sensor circuit. Proceed to Test 5.
h. Code sequence 88-12-23-55 indicates a fault in charge temperature sensor circuit. Proceed to Test 6. Turbo II only.
i. Code sequence 88-12-24-55 indicates a fault in throttle position sensor circuit. Proceed to Test 7.
j. Code sequence 88-12-25-55 indicates a fault in idle motor circuit. Proceed to Test 8.
k. Code sequence 88-12-26-55 indicates a fault in injector drive circuit. Refer to No Start Tests, Test 9.
l. Code sequence 88-12-27-55 indicates a fault in injector interface circuit. Refer to No Start Tests, Test 9.
m. Code sequence 88-12-31-55 indicates a fault in Canister purge solenoid circuit. Proceed to Test 9.
n. Code sequence 88-12-33-55 indicates a fault in A/C cutout relay. Proceed to Test 10. NOTE: Fault code 33 will be displayed if the vehicle is not equipped with A/C.
o. Code sequence 88-12-35-55 indicates a fault in radiator fan relay. Proceed to Test 11.
p. Code sequence 88-12-36-55 indicates a fault in wastegate solenoid. Proceed to Test 12.
q. Code sequence 88-12-37-55 indicates a fault in baro read solenoid. Proceed to Test 13.
r. Code sequence 88-12-42-55 indicates a fault in auto shutdown relay circuit. Check wiring from terminal No. 10 of SMEC 60-way electrical connector for an open circuit.
s. Code sequence 88-12-44-55 indicates a fused J2 circuit. Proceed to Test 14.
t. Code sequence 88-12-45-55 indicates a fault in overboost shutoff circuit. Proceed to Test 15.
u. Code sequence 88-12-51-55 or 88-12-52-55 indicates a fault in oxygen sensor circuit. Proceed to Test 18.
v. Code sequence 88-12-53-55, replace SMEC.