No Diagnostic Trouble Code Numbers Obtained

View: Data Link Connectors:

TEST 1

Is Powertrain Control Module (PCM) terminal 44 voltage OK with PCM connector disconnected?

Condition Voltage
Ignition switch On Below 2.0 Volts

YES -- Go to Test 2.

NO -- Repair wiring harness (Heated Oxygen Sensor (RH) terminal [GY/LB] - PCM terminal 44)

TEST 2

Is there continuity between Data Link Connector and PCM terminal?

Data link PCM
(P/LG) 17 (P/LG)
(GY/R) 46 (GY/R)

YES -- Go to Test 3.

NO -- Repair wiring harness.

TEST 3

Is there continuity between Data Link Connector terminal (W/PU) and PCM terminal 48?

YES -- Go to Test 4.

NO -- Repair wiring harness.

TEST 4

Does no continuity exist between PCM terminal 48 and a ground with the PCM connector disconnected?

YES -- Go to Test 5.

NO -- Repair wiring harness.

TEST 5

Are PCM terminals 37 and 57 voltages OK with PCM connector disconnected?

Condition Voltage
Ignition switch On Battery positive
voltage

YES -- Go to Test 6.

NO -- Repair wiring harness (PCM power relay terminal [R] - PCM terminal 37 and 57)

TEST 6

Is Malfunction Indicator Lamp operating OK?

YES -- Replace PCM.

NO -- Check Malfunction Indicator Lamp.