ON BOARD DIAGNOSTIC SYSTEM — Troubleshooting Code No. 04 (Camshaft Position Sensor SGT Signal)
F2-78flowchartCODE No. 04 (CAMSHAFT POSITION SENSOR SGT SIGNAL)
1
STEP 1: Is there poor connection in distributor circuit?
Yes
Repair or replace connector
No
2
STEP 2: Is code No. 03 also present?
No
return to step 5
Yes
3
STEP 3: Is there continuity between distributor terminal A (6-pin) and ground?
No
Check for open circuit in wiring from distributor to ground
Yes
4
STEP 4: Is there battery positive voltage at distributor terminal B (6-pin)?
No
Check for open circuit in wiring from distributor to main relay
Yes
5
STEP 5: Is there approx. 5V at distributor harness-side connector terminal B (3-pin)? (With distributor connector disconnected)
Yes
Replace distributor
No
6
STEP 6: Is there approx. 5V at ECM terminal 3E? (With distributor connector disconnected)
No
Replace ECM
Yes
7
Check for short or open circuit in wiring from distributor to ECM terminal 3E
Circuit Diagram
Camshaft Position Sensor SGT Signal Circuit
ECM:3GDistributor (Camshaft Position Sensor):SGC??
ECM:3EDistributor (Camshaft Position Sensor):SGT??