Mercury Capri 1.6L DOHC/XRS 1.6L DOHC Turbo (1992 – 94) OBD1 Codes

Model	Year	Engine identification	System
Capri 1.6L DOHC	1992-94	VIN position 8 = Z	MECS
Capri XR2 1.6L DOHC Turbo	1992-94	VIN position 8 = 6	MECS

General information

Malfunction indicator lamp (MIL) will illuminate continuously if permanent faults are recorded .
Malfunction indicator lamp (MIL) will illuminate briefly and then switch off if intermittent faults are recorded.
ECM operates in backup mode if sensors fail, to enable vehicle to be driven to repair shop.
Trouble codes can be displayed by the MIL or by using an analogue voltmeter or Scan Tool connected to the data link connector (DLC).

Accessing

Using malfunction indicator lamp (Mil)

Ensure ignition switched OFF.
Jump data link connector (DLC) 2 terminal STI to ground 1.
Switch ignition ON.
Count MIL flashes. Note trouble codes. Compare with trouble code table.

o 1.2 second flashes indicate the ‘tens’ of the trouble code [2] [A].
o 0.4 second flashes indicate the ‘units’ of the trouble code [2] [C].
o A 1.6 second pause (MIL OFF) separates ‘tens’ and ‘units’ [2] [B].
o A 0.4 second pause (MIL OFF) separates each flash [2] [D].
o A 4 second pause separates each trouble code [2] [E].
o For example: Trouble code 12 displayed [2]. Throttle position (TP) sensor.

Switch ignition OFF.

• Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2 [2].

Using analogue voltmeter

Ensure ignition switched OFF.
Connect an analogue voltmeter between data link connector (DLC) 1 terminal STO and ground [3]
Set analogue voltmeter to a DC voltage range of 0-20 V.
Jump data link connector (DLC) 2 terminal STI to ground [3]
Switch ignition ON.
Count voltmeter needle deflections. Note trouble codes. Compare with trouble code table.

o 1.2 second needle deflections indicate the ‘tens’ of the trouble code [2] [A].
o 0.4 second needle deflections indicate the ‘units’ of the trouble code [2] [C].
o A 1.6 second pause separates ‘tens’ and ‘units’ [2] (B).
o A 0.4 second pause separates each needle deflection [2] (D).
o A 4 second pause separates each trouble code [2] (E).
o For example: Trouble code 12 displayed [2]. Throttle position (TP) sensor.

Switch ignition OFF.
Trouble codes can also be displayed by using a Scan Tool connected to the data link connectors (DLC) 1 and 2 [3].

Erasing

Ensure ignition switched OFF.
Disconnect battery ground cable.
Depress brake pedal for 5-10 seconds.
Reconnect battery ground cable.
Repeat accessing procedure to ensure no trouble codes remain in ECM fault memory.

NOTE: Disconnecting battery ground lead may also erase memory from electronic units, such as radio.

Trouble code identification

Flash code	Fault location	Probable cause
01	Ignition signal	Wiring, ignition coil, ECM
03	Camshaft position (CMP) sensor	Wiring, CMP sensor, ECM
08	Volume air flow (VAF) sensor	Wiring, VAF sensor, ECM
09	Engine coolant temperature (ECT) sensor	Wiring, ECT sensor, ECM
10	Intake air temperature (IAT) sensor	Wiring, IAT sensor, ECM
12	Throttle position (TP) sensor	Wiring, TP sensor, ECM
14	Barometric pressure (BARO) sensor	Wiring, BARO sensor, ECM
15	Oxygen sensor (02S) -voltage below 0.55 V	Fuel pressure low, wiring, 02S, ECM
17 25	Oxygen sensor (02S) no voltage change Fuel pressure regulator control solenoid	Wiring, 02S, ECM Wiring, fuel pressure regulator control solenoid, ECM
26	Evaporative emission (EVAP) canister purge valve	Wiring, EVAP canister purge valve, ECM
34	Idle air control (lAC) valve	Wiring, lAC valve, ECM